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| Date: | 1300-1400 |
| Origin: | crump 'to curl up' (14-19 centuries), from crump, crumb 'bent' (11-18 centuries), from Old English |
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crum‧ple
1
[intransitive and transitive] also crumple up to crush something so that it becomes smaller and bent, or to be crushed in this way : 
Dan tore the page out, crumpled it, and threw it in the wastepaper basket.
[intransitive and transitive] also crumple upDan tore the page out, crumpled it, and threw it in the wastepaper basket.2 [intransitive] if your face crumples, you suddenly look sad or disappointed, as if you might cry
3 [intransitive] if your body crumples, you fall down in an uncontrolled way
