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dimbulb

American  
[dim-buhlb, -buhlb] / ˈdɪmˌbʌlb, -ˈbʌlb /

noun

Slang.

  1. a stupid person; dimwit.

Etymology

Origin of dimbulb

An Americanism dating back to 1930–35; dim + bulb

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.