noun
straw-thatched roof
A roof made of straw thatch, typical of traditional Japanese farmhouses (minka).
古い民家には藁屋根が残っている。
Old private houses still have straw-thatched roofs.
茅葺き屋根 is a broader term for thatched roofs using miscanthus or other grasses, while 藁屋根 specifically uses rice straw.
Compound of 藁 (wara, 'straw') and 屋根 (yane, 'roof').