alewife
Concise Oxford English Dictionary © 2008 Oxford University Press:
alewife/ˈeɪlwʌɪf/
▶noun (pl. alewives) a NW Atlantic fish of the herring family, swimming up rivers to spawn. [Alosa pseudoharengus.]
– origin C17: perh. from earlier alewife ‘woman who keeps an alehouse’, with ref. to the fish's large belly.
'alewife' also found in these Oxford entries:

