A name in the West Indies for several kinds of palm, the leaves of which are used for thatching
{i} covering or mat made from straw; material that resembles straw or hay (often referring to hair)
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
A thatch or a thatch roof is a roof made from straw or reeds. They would live in a small house with a green door and a new thatch
You can refer to someone's hair as their thatch of hair, especially when it is very thick and untidy. Teddy ran thick fingers through his unruly thatch of hair. See Edward Teach
a house roof made with a plant material (as straw) hair resembling thatched roofing material plant stalks used as roofing material cover with thatch; "thatch the roofs