either of two species of micro moth, esp the brown house moth (Hofmannophila pseudospretella) which, although it usually inhabits birds' nests, sometimes enters houses where its larvae can be very destructive of stored fabrics and foodstuffs
Examples of 'house moth' in a sentence
house moth
The brown house moth is larger than the clothes moths (10-12mm) and is coppery, withdistinct dark patches on the wings.
Times, Sunday Times (2018)
But the big house moths flying towards the light are not the ones you need to worry about.