noun ·Uncommon ·Advanced level

Definitions

Noun

1. 1
   Ascophyllum nodosum, a seaweed also known as knotted wrack. countable, uncountable
2. 2
   coarse brown seaweed growing on rocks exposed at low tide wordnet
3. 3
   Fucus vesiculosus, a similar seaweed also known as bladderwrack. countable, uncountable

Synonyms

All synonyms

algaebeanbladder wrackbladder wrackbladderwrackbracken

Etymology

From rock + weed.

Related phrases

ascophyllum nodosumfucus vesiculosusknotted wrack

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