Definition of yellowfin noun from the Oxford Advanced American Dictionary

 

yellowfin

 noun
noun
NAmE//ˈyɛloʊˌfɪn//
 
(pl. yellowfin or yellowfins)(also yellowfin tuna)[countable, uncountable]
 
jump to other results
a type of tuna (= a large sea fish used for food) that has yellow fins on its back