- Brit a chemical test of a driver's breath to determine the amount of alcohol he or she has consumed
WordReference Random House Unabridged Dictionary of American English © 2026
breath′ test′,
- Medicinea test by breath analyzer.
- 1965–70
Collins Concise English Dictionary © HarperCollins Publishers::
breath test n vb breath-test (transitive) to carry out a breath test on (someone)