Frass

//fɹæs// adj, noun, slang

adj, noun, slang ·Moderate ·College level

Definitions

Noun
  1. 1
    The droppings or excrement of insect larvae. countable, uncountable
  2. 2
    artificial turf Multicultural-London-English, informal, uncountable

    "Although purists object to artificial turf or ‘frass’, it finds purchase as way to save water in parched Golden State"

  3. 3
    Alternative form of ferash. Multicultural-London-English, alt-of, alternative
  4. 4
    The sawdust-like byproduct of wood-boring insects like woodworm, termites, old-house borers or powderpost beetles. countable, uncountable

    "Examine the stalk, especially behind the sheaths, for holes and sawdustlike frass where the larvae have entered to tunnel in the stalk."

Adjective
  1. 1
    Under the influence of marijuana, stoned. Multicultural-London-English

Example

More examples

"Examine the stalk, especially behind the sheaths, for holes and sawdustlike frass where the larvae have entered to tunnel in the stalk."

Etymology

Etymology 1

From German Fraß.

Etymology 2

Blend of fake + grass.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.