pip

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A dot indicating a unit of numerical value on dice or dominoes.
• noun A mark indicating the suit or numerical value of a playing card.
• noun A spot or speck.
• noun A rootstock of certain flowering plants, especially the lily of the valley.
• noun Any of the small segments that make up the surface of a pineapple.
• noun Informal A shoulder insignia indicating the rank of certain officers, as in the British Army.
• noun The small seed of a fruit, as that of an apple or orange.
• noun A disease of birds, characterized by a thick mucous discharge that forms a crust in the mouth and throat.
• noun Slang A minor unspecified human ailment.
• intransitive verb To break through (the shell) in hatching. Used chiefly of birds.
• intransitive verb To peep or chirp.
• noun A short, high-pitched radio signal.
• transitive verb To wound or kill with a bullet.
• transitive verb To defeat.
• transitive verb To blackball.

from The Century Dictionary.

• noun A disease of fowls, consisting in a secretion of thick mucus in the mouth and throat, often accompanied by the formation of a sheath-like scale on the end of the tongue: not to be confused with canker or roup.
• noun The kernel or seed of fruit, as of an apple or an orange.
• noun One of the spots on dice or on playing-cards: thus, the ace has one pip; the ten, ten pips.
• noun One of the rhomboid-shaped spaces into which the surface of a pineapple is divided.
• noun A trade-name used by manufacturers and dealers in artificial flowers for an imitation of the central part of a flower which bears the seeds or fruit.
• To peep, pipe, or chirp, as a chick or young bird.
• To crack or chip a hole through (the shell): said of a chick in the egg.
• To blackball.

from the GNU version of the Collaborative International Dictionary of English.

• noun A contagious disease of fowls, characterized by hoarseness, discharge from the nostrils and eyes, and an accumulation of mucus in the mouth, forming a “scale” on the tongue. By some the term pip is restricted to this last symptom, the disease being called roup by them.
• noun (Bot.) A seed, as of an apple or orange.
• noun One of the conventional figures or “spots” on playing cards, dominoes, etc.
• intransitive verb To cry or chirp, as a chicken; to peep.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun One of the spots or symbols on a playing card, domino, die, etc.
• noun military, public service One of the stars worn on the shoulder of a uniform to denote rank, e.g. of a soldier or a fireman.
• noun A spot; a speck.
• noun A spot of light or an inverted V indicative of a return of radar waves reflected from an object; a blip.
• noun A piece of rhizome with a dormant shoot of the lily of the valley plant, used for propagation
• verb To get the better of; to defeat
• verb To hit with a gunshot
• noun obsolete A pippin.
• noun A seed inside certain fleshy fruits (compare stone/pit), such as an peach, orange, or apple.
• noun US, colloquial Something or someone excellent, of high quality.
• noun UK, dated, WW I, signalese P in RAF phonetic alphabet
• verb To peep, to chirp
• verb avian biology To make the initial hole during the process of hatching from an egg
• noun One of a series of very short, electronically produced tones, used, for example, to count down the final few seconds before a given time or to indicate that a caller using a payphone needs to make further payment if he is to continue his call.
• noun finance, currency trading The smallest price increment between two currencies in foreign exchange (forex) trading.
• noun humorous Of humans, a disease, malaise or depression.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb kill by firing a missile
• noun a minor nonspecific ailment
• noun a mark on a die or on a playing card (shape depending on the suit)
• noun a small hard seed found in some fruits
• noun a radar echo displayed so as to show the position of a reflecting surface