Webster's Revised Unabridged Dictionary · 1913

Pinnatiped

Pinnatiped , adjective

[Latin pinnatus feathered + pes, pedis foot: compare French pinnatipède.]

(Zoology) Having the toes bordered by membranes; fin-footed, as certain birds.

Pinnatiped , noun

(Zoology) Any bird which has the toes bordered by membranes.