frass
/fræs/
noun
- The fine, powdery waste material produced by insects that eat wood or plants, often found near holes or tunnels they make.
- Gardeners often spot frass at the base of a tree infested with borers.
- The carpenter ants left piles of frass on the basement floor.
- Under the bark, the beetle's frass looked like sawdust mixed with tiny pellets.