• (British) IPA: /ˈkʌz.n̩/
• (GA) IPA: /ˈkʌz.ɪn/, /ˈkʌzən/
• (America, weak vowel merger) IPA: [ˈkʰɐz.ən]

cousin (plural cousins)

1. The child of a person's uncle or aunt; a first cousin.

   Synonyms: first cousin

   I think my cousin is a good man.

2. Any relation who is not a direct ancestor or descendant but part of one's extended family; one more distantly related than an uncle, aunt, granduncle, grandaunt, nephew, niece, grandnephew, grandniece, etc.
3. (obsolete) A title formerly given by a king to a nobleman, particularly to those of the council. In English writs, etc., issued by the crown, it signifies any earl.
   • c. 1593, William Shakespeare, “The Tragedy of Richard the Third: […]”, in Mr. William Shakespeares Comedies, Histories, & Tragedies: Published According to the True Originall Copies (First Folio), London: Printed by Isaac Iaggard, and Ed[ward] Blount, published 1623, OCLC 606515358 ↗, [Act III, scene iv]:

     My noble lords and cousins, all, good morrow.

4. (figurative) Something kindred or related to something else.
   • 2003 Nov. 21, Tim Homfray, "What do they mean... ↗," Times Educational Supplement (UK) (retrieved 20 Nov 2012):

     Partnering, along with its less irritating cousin "partnership", crops up all over the place, being equally useful to the lazy jargoneer and the lazy policy-maker. It has been said that there is no noun which cannot be verbed; in the same way, there is now nothing, concrete or abstract, which cannot be partnered.

5. (espionage, slang, mostly, in the plural) A member of the British intelligence services (from an American perspective) or of the American intelligence services (from a British perspective).

• French: cousin, cousine
• German: Cousin, Vetter, Cousine, Kusine, Base (regional)
• Italian: cugino, cugina
• Portuguese: primo, prima
• Russian: двою́родный брат
• Spanish: primo, prima

• German: entfernter Verwandter, entfernte Verwandte
• Russian: ро́дственник