Search Result for "nephew": 
Wordnet 3.0

NOUN (1)

1. a son of your brother or sister;


The Collaborative International Dictionary of English v.0.48:

Nephew \Neph"ew\ (n[e^]f"[-u]; in England n[e^]v"[-u]; 277), n. [OE. neveu, nevou, nevu, fr. F. neveu, OF. also, nevou, L. nepos; akin to AS. nefa, D. neef, G. neffe, OHG. nevo, Icel. nefi a kinsman, Gr. ne`podes, pl., brood, young, Skr. nep[=a]t grandson, descendant. [root]262. Cf. Niece, Nepotism.] 1. A grandson or grandchild, or remoter lineal descendant. [Obs.] [1913 Webster] But if any widow have children or nephews [Rev. Ver. grandchildren]. --1 Tim. v. 4. [1913 Webster] If naturalists say true that nephews are often liker to their grandfathers than to their fathers. --Jer. Taylor. [1913 Webster] 2. A cousin. [Obs.] --Shak. [1913 Webster] 3. The son of a brother or a sister, or of a brother-in-law or sister-in-law. --Chaucer. [1913 Webster]
WordNet (r) 3.0 (2006):

nephew n 1: a son of your brother or sister [ant: niece]
Moby Thesaurus II by Grady Ward, 1.0:

43 Moby Thesaurus words for "nephew": 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, niece, nuncle, nunks, nunky, second cousin, sis, sissy, sister, sister-german, sistern, son, stepbrother, stepsister, unc, uncle, uncs, uterine brother
Bouvier's Law Dictionary, Revised 6th Ed (1856):

NEPHEW, dom. rel. The son of a person's brother or sister. Amb. 514; 1 Jacob's Ch. R. 207.