Pinniped \Pin"ni*ped\, n. [L. pinna feather, fin + pes, pedis, a foot: cf. F. pinnip[`e]de.]

(Zo["o]l.)
   (a) One of the Pinnipedia; a seal.
   (b) One of the Pinnipedes.

Source: Webster's Revised Unabridged Dictionary (1913)