Search Result for "uncle": 
Wordnet 3.0

NOUN (2)

1. the brother of your father or mother; the husband of your aunt;

2. a source of help and advice and encouragement;
- Example: "he played uncle to lonely students"


The Collaborative International Dictionary of English v.0.48:

Uncle \Un"cle\, 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? grandmother, Icel. [=a]i 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]
WordNet (r) 3.0 (2006):

uncle n 1: the brother of your father or mother; the husband of your aunt [ant: aunt, auntie, aunty] 2: a source of help and advice and encouragement; "he played uncle to lonely students"
Moby Thesaurus II by Grady Ward, 1.0:

43 Moby Thesaurus words for "uncle": aunt, auntie, blood brother, brethren, brother, bub, bubba, bud, buddy, country cousin, cousin, cousin once removed, cousin twice removed, daughter, father, first cousin, foster brother, frater, grandnephew, grandniece, granduncle, great-aunt, great-uncle, half brother, kid brother, mother, nephew, niece, nuncle, nunks, nunky, second cousin, sis, sissy, sister, sister-german, sistern, son, stepbrother, stepsister, unc, uncs, uterine brother
V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

UNCLE Unix Net for Computer security in Law Enforcement (org., USA, Unix), "U.N.C.L.E."