kipper

Concise Oxford English Dictionary © 2008 Oxford University Press:
kipper/ˈkɪpə(r)/

▶noun

• 1 a herring that has been split open, salted, and dried or smoked.

• 2 a male salmon in the spawning season.

▶verb (usu. as adj. kippered) cure (a herring) in such a way.

– origin OE cypera, of Gmc origin; perh. rel. to copper1.