- soot; coal dust; smut.
- dust, especially sawdust or dust from a gristmill.
- grease from bearings, axles, etc.
Origin of coom
First recorded in 1580–90; variant of culm1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for coom
"Coom down," he clenched the bargain; and set about shipping the sweeps.The Black Bag
Louis Joseph Vance
Your time'll coom soon enough by the look on yo' wi' niver no hurry.Bob, Son of Battle
Postman's coom over fra' Drigg wi' a letter—will it be for wan of ye?'The Giant's Robe
Coom down and fill your pockets,And I'll giss you like efery dings.The Book of Humorous Verse
Yo' didna know her when she coom here, an' no one else guessed at th' truth."Seth"
Frances Hodgson Burnett
- dialect, mainly Scot and Northern English waste material, such as dust from coal, grease from axles, etc
C16 (meaning: soot): probably a variant of culm 1