mulm

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. The [[sludge]] that collects at the bottom (or walls) of an [[aquarium]], consisting of fish [[excrement]], [[decay]]ing plant matter, and other assorted [[detritus]]

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.