Also called first cousin, full cousin. the son or daughter of an uncle or aunt. See also second cousin, removed ( def 2 ).
one related by descent in a diverging line from a known common ancestor, as from one's grandparent or from one's father's or mother's sister or brother.
a kinsman or kinswoman; relative.
a person or thing related to another by similar natures, languages, geographical proximity, etc.: Our Canadian cousins are a friendly people.
Slang. a gullible, innocent person who is easily duped or taken advantage of.
a term of address used by a sovereign in speaking, writing, or referring to another sovereign or a high-ranking noble.

1250–1300; Middle English cosin < Anglo-French co(u)sin, Old French cosin < Latin consōbrīnus cousin (properly, son of one's mother's sister), equivalent to con- con- + sōbrīnus second cousin (presumably orig. “pertaining to the sister”) < *swesrīnos, equivalent to *swesr-, gradational variant of *swesōr (> soror sister) + *-īnos -ine1; for -sr- > -br- cf. December

cousinage, cousinhood, cousinship, noun Unabridged


Victor [veek-tawr] , 1792–1867, French philosopher and educational reformer: founder of the method of eclecticism in French philosophy. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
cousin (ˈkʌzən)
1.  first cousin, cousin-german, Also called: full cousin the child of one's aunt or uncle
2.  a relative who has descended from one of one's common ancestors. A person's second cousin is the child of one of his parents' first cousins. A person's third cousin is the child of one of his parents' second cousins. A first cousin once removed (or loosely second cousin) is the child of one's first cousin
3.  a member of a group related by race, ancestry, interests, etc: our Australian cousins
4.  a title used by a sovereign when addressing another sovereign or a nobleman
[C13: from Old French cosin, from Latin consōbrīnus cousin, from sōbrīnus cousin on the mother's side; related to soror sister]
adj, —adv

Cousin (French kuzɛ̃)
Victor (viktɔr). 1792--1867, French philosopher and educational reformer

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

1160, from O.Fr. cosin, from L. consobrinus "mother's sister's child," from com- "together" + sobrinus (earlier *sosrinos) "cousin on mother's side," from soror (gen. sororis) "sister." Used familiarly as a term of address since 1430, especially in Cornwall. Your first cousin (also cousin-german) is
the son or daughter of an uncle or aunt; your children and your first cousin's are second cousins to one another; to you, your first cousin's children are first cousin once removed. Phrase kissing cousin is Southern U.S. expression, 1940s, denoting "those close enough to be kissed in salutation;" Kentish cousin (1796) is an old British term for "distant relative."
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Idioms & Phrases


see country cousin; first cousin; kissing cousins; second cousin.

The American Heritage® Dictionary of Idioms by Christine Ammer.
Copyright © 1997. Published by Houghton Mifflin.
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Example sentences for cousin
Family gatherings brought the wilsons in contact with cousin mike love.
Paddlefish, a sturgeon cousin, is also farmed in increasing numbers.
Its technique is similar to its smaller cousin, with a few notable differences.
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