(definition) by Webster 1913 Wed Dec 22 1999 at 1:35:38

O"per*cle (?), n. [Cf.F. opercule. See Operculum.]

1. Anat.

Any one of the bony plates which support the gill covers of fishes; an opercular bone.

2. Zool.

An operculum.

 

© Webster 1913.

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