speck

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A small spot, mark, or discoloration.
2. n. A tiny amount; a bit: not a speck of truth in her story.
3. v. To mark with specks.

Century Dictionary and Cyclopedia

1. n. A very small superficial spot or stain; a small dot, blot, blotch, or patch appearing on or adhering to a surface: as, specks of mold on paper; fly -specks on a wall.
2. n. In fruit, specifically, a minute spot denoting the beginning of decay; a pit or spot of rot or rottenness; hence, sometimes, a fruit affected by rot.
3. n. A patch or piece of some material.
4. n. Something appearing as a spot or patch; a small piece spread out: as, a speck of snow or of cloud.
5. n. A distinct or separate piece or particle; a very little bit; an atom; a mite: as, specks of dust; a speck of snuff or of soot; hence, the smallest quantity; the least morsel: as, he has not a speck of humor or of generosity.
6. n. A percoid fish, Ulocentra stigmæa of Jordan, common in ponds of the hill-country from Georgia to Louisiana. It is a darter, 2½ inches long, of an olivaceous color, speckled with small orange spots, and otherwise variegated.
7. n. A speck-moth.
8. To spot; mark or stain in spots or dots.
9. Of fruit, specifically, to mark with a discolored spot denoting decay or rot: usually in the past participle.
10. n. Fat; lard; fat meat. Now used chiefly as derived from the German in the parts of Pennsylvania originally settled by Germans, or from the Dutch in New York (also in South Africa, for the fat meat of the hippopotamus); among whalers it is used for whale's blubber.
11. To stain or dot with ink small blemishes in (a finished fabric), so as to conceal or obliterate them.

Wiktionary

1. n. A tiny spot, especially of dirt etc.

GNU Webster's 1913

1. n. The blubber of whales or other marine mammals; also, the fat of the hippopotamus.
2. n. A small discolored place in or on anything, or a small place of a color different from that of the main substance; a spot; a stain; a blemish.
3. n. A very small thing; a particle; a mite
4. n. A small etheostomoid fish (Ulocentra stigmæa) common in the Eastern United States.
5. v. To cause the presence of specks upon or in, especially specks regarded as defects or blemishes; to spot; to speckle.

WordNet 3.0

1. n. a slight but appreciable amount
2. n. (nontechnical usage) a tiny piece of anything
3. v. produce specks in or on
4. n. a very small spot