WordReference Random House Unabridged Dictionary of American English © 2025
ra•win
(rā′win),USA pronunciation n.
- Meteorologya method of observation of upper-air winds conducted by means of a weather balloon tracked by radar or a radio direction finder. Cf. raob, rawinsonde.
- ra(dio) + win(ds-aloft) 1945–50
'rawin' also found in these entries (note: many are not synonyms or translations):