noun / verb
thatch
THACH/θætʃ/
A covering made from densely laid dry stems.
A thick layer of thatch keeps rain out of the cottage.

Etymology
Old English þæc named both a roof and its covering. The modern material sense focuses on the straw, reeds, or similar plant matter used to make that covering.
In context
we used bamboo also thatch roof because thatch is the only material that's used
More examples
- Workers thatch the roof with bundles of dried reeds.
- The old thatch needs replacing before winter.
- A thatch of unruly hair covers his forehead.
Forms
thatch · thatches · thatched · thatching
thatcher noun — Someone who covers roofs with dried plant stems.
Similar words
- roofing
- Roofing includes any roof covering, not just dried plant stems.