a device for setting horizontal surfaces, consisting of an accurate block of material in which a sealed slightly curved tube partially filled with liquid is set so that the air bubble rests between two marks on the tube when the block is horizontal
WordReference Random House Unabridged Dictionary of American English © 2025
spir′it lev′el, [Survey.]
- Surveyinga device for determining true horizontal or vertical directions by the centering of a bubble in a slightly curved glass tube or tubes filled with alcohol or ether. Also called level.
- 1760–70
Collins Concise English Dictionary © HarperCollins Publishers::
'spirit level' also found in these entries (note: many are not synonyms or translations):