noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A soft, earthy, dark-coloured rock or clay derived from the alteration of basalt. countable, uncountable

Synonyms

All synonyms

wacky

Etymology

Borrowed from German Wacke.

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