cous ‧ in S2 /ˈkʌz ə n/ BrE AmE noun [countable]
[ Date: 1200-1300 ; Language: Old French ; Origin: cosin , from Latin consobrinus , from com- ( ⇨ COM- ) + sobrinus 'cousin on the mother's side' (from soror 'sister' ) ]
1 . the child of your ↑ uncle or ↑ aunt ⇨ ↑ first cousin , ↑ kissing cousin , SECOND COUSIN
2 . something that has the same origins as something else
cousin of/to
a drug that is a chemical cousin to amphetamines
close/distant cousin
The Alaskan brown bear is a close cousin of the grizzly bear.
3 . someone or something that is similar to someone or something else:
His avant-garde music, sometime cousin to jazz, had limited appeal.