Meaning

noun protective covering consisting of a metal part that covers the engine

noun a loose hood or hooded robe (as worn by a monk)

verb cover with or as with a cowl

originFrom Middle English coule, from Old English cūle, from earlier cugele (“hood, cowl”), from Ecclesiastical Latin cuculla (“monk's cowl”), from Latin cucullus (“hood”), of uncertain origin. Doublet of cagoule.

Etymology from Wiktionary, CC BY-SA 3.0