RhymeZone: frass definitions

Definitions of frass:

noun: (entomology) The droppings or excrement of insect larvae.
noun: The sawdust-like byproduct of wood-boring insects like termites, old-house borers or powderpost beetles.
adjective: Under the influence of marijuana, stoned.
noun: (informal) artificial turf

(Definitions from Wiktionary)