名詞 pinniped:

1. aquatic carnivorous mammal having a streamlined body specialized for swimming with limbs modified as flippers
   同義詞：pinniped mammal, pinnatiped

pin.ni.ped

adj.（形容詞）
Of or belonging to the Pinnipedia, a suborder of carnivorous aquatic mammals that includes the seals, walruses, and similar animals having finlike flippers as organs of locomotion.
有鰭狀肢的：屬于鰭腳亞目動物的，肉食水生動物的一個分支，包括海獅、海象及其他類似的用鰭狀肢行進的動物
n.（名詞）
A mammal of the suborder Pinnipedia.
鰭腳亞目哺乳動物

來源：
From New Latin Pinnipedia [order name]
源自 現代拉丁語 Pinnipedia [目名]
Latin pinna [feather] * see pinna
拉丁語 pinna [羽毛] *參見 pinna
Latin pôs ped- [foot] * see -ped
拉丁語 pôs ped- [腳] *參見 -ped