thatch
noun
[ θatʃ ]
• a roof covering of straw, reeds, palm leaves, or a similar material.
• "the rain drummed noisily on the thatch above her head"
thatch
verb
• cover (a roof or a building) with straw or a similar material.
• "they have constructed the walls and are now thatching the roof"
Origin:
Old English theccan ‘cover’, of Germanic origin; related to Dutch dekken and German decken .