Thatch, v. t. [imp. & p. p. Thatched p. pr. & vb. n. Thatching.] To cover with, or with a roof of, straw, reeds, or some similar substance; as, to thatch a roof, a stable, or a stack of grain.
1. The act or art of covering buildings with thatch; so as to keep out rain, snow, etc.
2. The materials used for this purpose; thatch.