Thatch \Thatch\, v. t. [imp. & p. p. Thatched; p. pr. & vb. n. Thatching.]

[From Thatch, n.: cf. OE. thecchen, AS. ?eccean to cover.]

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.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Thatch \Thatch\, n. [OE. thak, AS. [thorn][ae]c a roof; akin to [thorn]eccean to cover, D. dak a roof, dekken to cover, G. dach a roof, decken 8cover, Icel. [thorn]ak a roof, Sw. tak, Dan. tag, Lith. st[=o]gas, Ir. teagh a house, Gael. teach, tigh, W. ty, L. tegere to cover, toga a toga, Gr. ?, ?, a roof, ? to cover, Skr. sthag. Cf. Deck, Integument, Tile, Toga.]

1. Straw, rushes, or the like, used for making or covering the roofs of buildings, or of stacks of hay or grain.

2. (Bot.) A name in the West Indies for several kinds of palm, the leaves of which are used for thatching.

Thatch sparrow, the house sparrow. [Prov. Eng.]

Source: Webster's Revised Unabridged Dictionary (1913)