plural fins
plural fins
Learner's definition of FIN
[count]
1
: a thin flat part that sticks out from the body of a fish and is used in moving or guiding the fish through water鳍 2
: a part on a machine (such as a car or airplane) that is shaped like a fish's fin鳍状物,翼(汽车、飞机等的形状像鱼鳍的部分) — see also tail fin — finned
/ˈfɪnd/ adjective