oldwife
oldwife , noun
1.
(Zoology) The local name of various fishes, as the European black sea bream (Cantharus lineatus), the American alewife, etc.
2.
(Zoology) A tropical Atlantic fish (Bessy cerca).
3.
(Zoology) A common long-tailed sea duck (Clangula hyemalis) of the northern parts of the US; also called old squaw.