Interoperculum \In`ter*o*per"cu*lum\, n.; pl. {-la} (-l[.a]).
(Anat.)
The postero-inferior opercular bone, in fishes.
Peplum \Pep"lum\, n.; pl. E. {-lumus}, L. {-la}. [L.]
A peplos. Hence: An overskirt hanging like an ancient peplos;
also, a short fitted skirt attached to a waist or coat.