old

American Heritage® Dictionary of the English Language, Fourth Edition

1. adj. Having lived or existed for a relatively long time; far advanced in years or life.
2. adj. Relatively advanced in age: Pamela is our oldest child.
3. adj. Made long ago; in existence for many years: an old book.
4. adj. Of or relating to a long life or to people who have had long lives: a ripe old age.
5. adj. Having or exhibiting the physical characteristics of age: a prematurely old face.
6. adj. Having or exhibiting the wisdom of age; mature: a child who is old for his years.
7. adj. Having lived or existed for a specified length of time: She was 12 years old.
8. adj. Belonging to a remote or former period in history; ancient: old fossils.
9. adj. Belonging to or being of an earlier time: her old classmates.
10. adj. Being the earlier or earliest of two or more related objects, stages, versions, or periods.
11. adj. Geology Having become slower in flow and less vigorous in action. Used of a river.
12. adj. Geology Having become simpler in form and of lower relief. Used of a landform.
13. adj. Exhibiting the effects of time or long use; worn: an old coat.
14. adj. Known through long acquaintance; long familiar: an old friend.
15. adj. Skilled or able through long experience; practiced.
16. adj. Used as an intensive: Come back any old time. Don't give me any ol' excuse.
17. adj. Used to express affection or familiarity: Good ol' Sam.
18. n. An individual of a specified age: a five-year-old.
19. n. Old people considered as a group. Used with the: caring for the old.
20. n. Former times; yore: in days of old.

Century Dictionary and Cyclopedia

1. Having lived or existed a long time; full of years; far advanced in years or life: applied to human beings, lower animals, and plants: as, an old man; an old horse; an old tree.
2. Of (a specified) age; noting the length of time or number of years that one has lived, or during which a thing or particular state of things has existed or continued; of the age of; aged: as, a child three months old; a house a century old.
3. Of or pertaining to the latter part of life; peculiar to or characteristic of those who are, or that which is, well advanced in years.
4. Having the judgment or good sense of a person who has lived long and has gained experience; thoughtful; sober; sensible; wise: as, an old head on young shoulders.
5. Of long standing or continuance. Begun long ago and still continued; of long continuance or prolonged existence; well-established: as, old customs; an old friendship.
6. Experienced; habituated: as, an old offender; old in vice or crime.
7. Of (some specified) standing as regards continuance or lapse of time.
8. Not new, fresh, or recent; having been long made; having existed long: as, an old house; an old cabinet.
9. Hence — That has long existed or been in use, and is near, or has passed, the limit of its usefulness; enfeebled or deteriorated by age; worn out: as, old clothes.
10. Well-worn; effete; worthless; trite; stale: expressing valuelessness, disrespect, or contempt: as, an old joke; sold for an old song.
11. Dating or reaching back to antiquity or to former ages; subsisting or known for a long time; long known to history.
12. Ancient; antique; not modern; former: as, the old inhabitants of Britain; the old Romans.
13. Early; pertaining to or characteristic of the earlier or earliest of two or more periods of time or stages of development: as, Old English; the Old Red Sandstone.
14. Former; past; passed away; disused; contrasted with or replaced by something new as a substitute; subsisting before something else: as, he built a new house on the site of the old one; the old régime; a gentleman of the old school; he is at his old tricks again.
15. Long known; familiar; hence, an epithet of affection or cordiality: as, an old friend; dear old fellow; old boy.
16. Old-fashioned; of a former time; hence, antiquated: as, an old fogy.
17. Great; high: an intensive now used only when preceded by another adjective also of intensive force: as, a fine old row; a high old time.
18. The mass of land comprising Europe, Asia, and Africa, in contradistinction to the new continent, consisting of North and South America.
19. The form of black letter used by English printers of the sixteenth century.
20. In mining, ancient workings: a term used in Cornwall.
21. A full-grown male kangaroo.
22. A man having habits or opinions considered peculiar to old women.
23. An apparatus for curing smoky chimneys; a chimney-cap or cowl.
24. See oldwife.
25. In physical geography, far advanced in the geographical cycle: noting a stage in which land-forms have been reduced to small relief and in which all processes of erosion and transportation have become relatively inactive.
26. A pivoted attachment of a pump-rod to a bell-crank.

Wiktionary

1. adj. Of an object, concept, relationship, etc., having existed for a relatively long period of time.
2. adj. Of a living being, having lived for most of the expected years.
3. adj. Of a perishable item, having existed for most, or more than its shelf life.
4. adj. Of an item that has been used and so is not new (unused).
5. adj. Having existed or lived for the specified time.
6. adj. Former, previous.
7. adj. That is no longer in existence.
8. adj. Obsolete; out-of-date.
9. adj. Familiar.
10. adj. Tiresome.
11. adj. Said of subdued colors, particularly reds, pinks and oranges, as if they had faded over time.
12. adj. A grammatical intensifier, often used in describing something positive.
13. adj. obsolete Excessive, abundant.
14. n. People who are old; old beings.
15. n. The older generation.

GNU Webster's 1913

1. n. obsolete Open country.
2. adj. Not young; advanced far in years or life; having lived till toward the end of the ordinary term of living.
3. adj. Not new or fresh; not recently made or produced; having existed for a long time
4. adj. Formerly existing; ancient; not modern; preceding; original.
5. adj. Continued in life; advanced in the course of existence; having (a certain) length of existence; -- designating the age of a person or thing
6. adj. Long practiced; hence, skilled; experienced; cunning.
7. adj. Long cultivated; , as opposed to new land, that is, to land lately cleared.
8. adj. Worn out; weakened or exhausted by use; past usefulness
9. adj. obsolete More than enough; abundant.
10. adj. Aged; antiquated; hence, wanting in the mental vigor or other qualities belonging to youth; -- used disparagingly as a term of reproach.
11. adj. Old-fashioned; wonted; customary; as of old; ; hence, colloquially, gay; jolly.
12. adj. Used colloquially as a term of cordiality and familiarity.

WordNet 3.0

1. adj. of long duration; not new
2. adj. skilled through long experience
3. n. past times (especially in the phrase `in days of old')
4. adj. (used for emphasis) very familiar
5. adj. belonging to some prior time
6. adj. just preceding something else in time or order
7. adj. (used informally especially for emphasis)
8. adj. of a very early stage in development
9. adj. (used especially of persons) having lived for a relatively long time or attained a specific age