n. [ F., fr. L. lunula, dim. of luna moon. ] 1. (Anat.) Anything crescent-shaped; a crescent-shaped part or mark; a lunula; a lune. [ 1913 Webster ]

2. (Chem.) A lune. See Lune. [ 1913 Webster ]

3. (Zool.) (a) A small or narrow crescent. (b) A special area in front of the beak of many bivalve shells. It sometimes has the shape of a double crescent, but is oftener heart-shaped. See Illust. of Bivalve. [ 1913 Webster ]

n. [ Dim. of lunule. ] (Zool.) A small spot, shaped like a half-moon or crescent; as, the lunulet on the wings of many insects. [ 1913 Webster ]

n. [ OE. uncle, OF. oncle, uncle, F. oncle, fr. L. avunculus a maternal uncle, dim. of avus a grandfather; akin to Lith. avynas uncle, Goth. aw&unr_; grandmother, Icel. āi great grandfather. ] 1. The brother of one's father or mother; also applied to an aunt's husband; -- the correlative of aunt in sex, and of nephew and niece in relationship. [ 1913 Webster ]

2. A pawnbroker. [ Slang ] Thackeray. [ 1913 Webster ]

3. An eldery man; -- used chiefly as a kindly or familiar appellation, esp. (Southern U. S.) for a worthy old negro; as, “Uncle Remus.” [ Colloq. ]

Plain old uncle as he [ Socrates ] was, with his great ears, -- an immense talker. Emerson. [ Webster 1913 Suppl. ]

My uncle, a pawnbroker. [ Slang ] --
Uncle Sam, a humorous appellation given to the United States Government. See Uncle Sam, in Dictionary of Noted Names in Fiction. [ 1913 Webster ]

a. [ AS. uncl&aemacr_;ne. See Unnot, and Clean. ] 1. Not clean; foul; dirty; filthy. [ 1913 Webster ]

2. Ceremonially impure; needing ritual cleansing. [ 1913 Webster ]

He that toucheth the dead body of any man shall be unclean seven days. Num. xix. 11. [ 1913 Webster ]

3. Morally impure. “Adultery of the heart, consisting of inordinate and unclean affections.” Perkins. [ 1913 Webster ]

-- Un*clean"ly, adv. -- Un*clean"ness, n. [ 1913 Webster ]

Unclean animals (Script.), those which the Israelites were forbidden to use for food. --
Unclean spirit (Script.), a wicked spirit; a demon. Mark i. 27. [ 1913 Webster ]

a. Incapable of being cleansed or cleaned. [ 1913 Webster ]

v. t. Same as Unclinch. [ 1913 Webster ]

n. The office or position of an uncle. Lamb. [ 1913 Webster ]

v. t. [ 1st pref. un- + clew. ] To unwind, unfold, or untie; hence, to undo; to ruin. Shak. [ 1913 Webster ]