CRUMBLE, verb transitive [G.] To break into small pieces; to divide into minute parts. CRUMBLE, verb intransitive 1. To fall into small pieces; to break or part into small fragments. I a stone is brittle, it will crumble into gravel. 2. To fall into decay; to perish; as, our flesh shall crumble into dust.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI