pinnatiped
Pin*nat"i*ped, a. Etym: [L. pinnatus feathered + pes, pedis foot: cf. F. pinnatipède.] (Zoöl.) Defn: Having the toes bordered by membranes; fin-footed, as certain birds. Pin*nat"i*ped, n. (Zoöl.) Defn: Any bird which has the toes bordered by membranes.