fingernailful

Etymology

From fingernail + -ful.

fingernailful means enough to be stored under one's fingernail. Lexicurio rates it Sui generis — a strength score of 85 out of 100.

noun

Enough to be stored under one's fingernail.“He hurried up the back stairs with the hot water, scooping up a fingernailful of frost off the window in the back hall where there wasn't any register.”