head down, bum up

English - English

Definition of head down, bum up in English English dictionary

A figurative bodily position adopted when working hard at some task, either physical or mental. (Head down may well be literal, but bum up is figurative.)

2007: Hadn't heard a thing. Hard at work, head down, bum up. — Gold Coast Bulletin, Call of sea sirens, 6 April 2007.

Synonyms

hard at work, nose to the grindstone