IPA: /ˈtɜrnəbl/
KK: /ˈtɜrnəbl/
Able to be rotated or moved in a circular direction.
The chair is turnable, allowing you to face different directions easily.
Turnable → It is formed from "turn" (from Old English "turnian", meaning to rotate or change position) and "-able" (meaning capable of). The word "turnable" means capable of being turned or rotated.
Think of something that is 'capable of being rotated' — 'turn' means to rotate, and '-able' indicates capability.