- thatch⇄noun thatcher.
- thatch⇄noun 1. straw, rushes, palm leaves, or the like, as a roof or covering.
2. a roof or covering made of thatch.
3. (Informal, Figurative.) the hair covering the head.
4. any one of various palms whose leaves are used to thatch. - thatch⇄thatch, noun, verb.
- thatch⇄v.t. to make or cover with thatch or as if with thatch.