Opercle
Pronunciation : O"per*cle
Part of Speech : n.
Etymology : [Cf.F. opercule. See Operculum.]
Definition : 1. (Anat.)
Defn: Any one of the bony plates which support the gill covers of fishes; an opercular bone.
2. (Zo?l.)
Defn: An operculum.
Source : Webster's Unabridged Dictionary, 1913