IPA: /ˈtɪl.ə.bəl/
KK: /ˈtɪləbəl/
Able to be cultivated or farmed, suitable for growing crops.
The farmer was pleased to find that the land was tillable and ready for planting.
Tillable → It is formed from "till" (from Old English *tilian*, meaning to prepare land for crops) and "-able" (meaning capable of). The word "tillable" means capable of being tilled or prepared for cultivation.
Think of land that is 'capable of being prepared' for crops — 'till' means to prepare the land, and '-able' indicates it can be done.