dim-bulb /ˈdɪm ˌbʌlb/adjective 1dim bulb noun 1forms 1 adjective1 •Slow-witted, stupid.Up to now the guy's just a dim-bulb character who likes to dress up in a sailor suit and spoon creme broolay out of a bowl for a living. — 1990 dim bulb noun1 •(informal) A person who is slow-witted or stupid.Dwight Eisenhower was roundly derided by the liberal intelligentsia as a Mr. Malaprop, a golf-playing, crony-loving dim bulb. — 2001 formsdim bulbs
