a wheel oscillating against the hairspring of a timepiece, thereby regulating its beat
WordReference Random House Unabridged Dictionary of American English © 2026
bal′ance wheel′, [Horol.]
- Timebalance (def. 15).
- 1660–70
Collins Concise English Dictionary © HarperCollins Publishers::
'balance wheel' also found in these entries (note: many are not synonyms or translations):