frass
noun
ˈfras 
: debris or excrement produced by insects
Example Sentences
Recent Examples on the Web Insect holes may also have some boring dust (frass) in or on the ground under them, whereas sapsucker holes will not. 
oregonlive, 15 May 2021 The bamboo huts of the miners had crumbled to frass. Paul Salopek, National Geographic, 24 June 2020 Borers are easy to distinguish from disease because the sap is mixed with frass (the debris and fecal matter left behind by boring insects). oregonlive, 20 Dec. 2019 The plant also produces 3,500 tons of fatty acid oil and 16,500 tons of frass, or maggot droppings, which is used as fertilizer. BostonGlobe.com, 4 Nov. 2019 One byproduct of the process is frass — the scientific term for bug excrement. Christopher Ingraham, Washington Post, 3 July 2019 Besides holes, these pests can also leave behind shed pupae skins, webbing, and frass, insect excrement that looks like large grains of sand, according to pest management brand Woodstream. Caroline Picard, Good Housekeeping, 13 Mar. 2019 Look for large, black ants as well as the tell-tell sawdust-like debris, called frass. Caroline Picard, Good Housekeeping, 9 May 2018 Look for large, black ants as well as the tell-tell sawdust-like debris, called frass. Caroline Picard, Good Housekeeping, 9 May 2018 See More
oregonlive, 15 May 2021 The bamboo huts of the miners had crumbled to frass. Paul Salopek, National Geographic, 24 June 2020 Borers are easy to distinguish from disease because the sap is mixed with frass (the debris and fecal matter left behind by boring insects). oregonlive, 20 Dec. 2019 The plant also produces 3,500 tons of fatty acid oil and 16,500 tons of frass, or maggot droppings, which is used as fertilizer. BostonGlobe.com, 4 Nov. 2019 One byproduct of the process is frass — the scientific term for bug excrement. Christopher Ingraham, Washington Post, 3 July 2019 Besides holes, these pests can also leave behind shed pupae skins, webbing, and frass, insect excrement that looks like large grains of sand, according to pest management brand Woodstream. Caroline Picard, Good Housekeeping, 13 Mar. 2019 Look for large, black ants as well as the tell-tell sawdust-like debris, called frass. Caroline Picard, Good Housekeeping, 9 May 2018 Look for large, black ants as well as the tell-tell sawdust-like debris, called frass. Caroline Picard, Good Housekeeping, 9 May 2018 See More Word History
Etymology
German, insect damage, literally, eating away, from Old High German vrāz food, from frezzan to devour — more at fret
First Known Use
1854, in the meaning defined above