WordReference Random House Unabridged Dictionary of American English © 2025
rock•oon
(rok′o̅o̅n, ro ko̅o̅n′),USA pronunciation n.
- Rocketrya rocket launched from a balloon at a high altitude.
- rock(et1) + (ball)oon 1950–55
'rockoon' also found in these entries (note: many are not synonyms or translations):