The term 'Eaves of Grass' is a reference to the famous poem by Walt Whitman, 'Leaves of Grass'. The poem was first published in 1855 and is considered one of the most influential works of American literature. The crossword solution for this term is 'THATCH', which refers to a type of roofing material made from straw or other plant material. THATCH roofs are commonly used in rural areas and have been used for centuries as a way to protect homes from the elements.