[thach] 
| 1. | Also, thatching. a material, as straw, rushes, leaves, or the like, used to cover roofs, grain stacks, etc. |
| 2. | a covering of such a material. |
| 3. | the leaves of various palms that are used for thatching. |
| 4. | something resembling thatch on a roof, esp. thick hair covering the head: a thatch of unruly red hair. |
| 5. | Horticulture. a tightly bound layer of dead grass, including leaves, stems, and roots, that builds up on the soil surface at the base of the living grass of a lawn. |
| 6. | to cover with or as if with thatch. |
| 7. | Horticulture. to remove thatch from (a lawn); dethatch. |
| thatch (thāch) n.
To cover with or as if with thatch. [Middle English thacche, alteration (influenced by thecchen, thacchen, to thatch, from Old English theccan, to cover) of thak, from Old English thæc; see (s)teg- in Indo-European roots.] thatch'er n., thatch'y adj. |