crumbling
adjectiveUK /ˈkrʌm.bəl.ɪŋ/
US /ˈkrʌm.bəl.ɪŋ/
Breaking into small pieces.
The old wall was crumbling and bits of stone fell to the ground.
OTHER MEANINGS
2. Becoming weaker or failing gradually.
The crumbling economy worried everyone in the town.
3. The act of something breaking into crumbs or small bits.
The crumbling of the cookie left crumbs all over the table.
4. Old and falling into ruin.
They explored a crumbling castle on the hill.