cowl

(noun) protective covering consisting of a metal part that covers the engine. Synonyms: hood, bonnet, cowling. Examples: "There are powerful engines under the hoods of new cars." "The mechanic removed the cowling in order to repair the plane's engine."

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

(verb) cover with or as with a cowl. Example: "Cowl the boys and veil the girls."