dipstick

[ dip-stik ]

noun

1. a rod for measuring the depth of a liquid; especially, a thin metal rod used to measure the oil level in the crankcase of an automotive engine.
2. Slang. fool; jerk.

dipstick

/ ˈdɪpˌstɪk /

noun

1. a graduated rod or strip dipped into a container to indicate the fluid level
2. slang.
   a fool

Word History and Origins

Origin of dipstick¹

First recorded in 1925–30; dip ¹ + stick ¹