noun plural
: the bony plates developed in and supporting the gill cover in most fishes and being usually the opercle, preopercle, subopercle, and interopercle
noun plural
: the bony plates developed in and supporting the gill cover in most fishes and being usually the opercle, preopercle, subopercle, and interopercle
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012