Frass

Pronunciation
/fræs/
Category
Physiology
Singular
Frass
Plural
Frasses

Definition

The excrement or droppings of insect larvae or other insects, often mixed with bits of plant material or wood.

Etymology

From the German word 'Frass', meaning 'eating' or 'feeding' waste.

Example

The presence of frass on the leaves is a clear indication of a caterpillar infestation.

Synonyms

  • Insect droppings
  • Insect feces

Related Terms

Usage Notes

Frass is often used by entomologists to infer the presence and activity of insects even if the insects themselves are not directly observed.