In plural. The scales of a fish. Obsolete. rare.

One of the scales of a fish's skin. Chiefly attributive (in quot. 1822 referring to ichthyosis: cf. fish-skin disease n. at fish-skin, n.…

Silver, or a material simulating it. The silvery lamellæ on the scales of fish, used in the manufacture of artificial pearls.

A bony material, present as a layer in some fish scales, consisting of sheets of collagenous fibres within a mineralized matrix.