crum up

verb

To delouse; to treat for lice.

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Meanings

verbcrum up (third-person singular simple present crums up, present participle crumming up, simple past and past participle crummed up)

present singular third person crums up · participle present crumming up · participle past crummed up · past crummed up

  1. slangTo delouse; to treat for lice.
  2. slangtransitiveTo ruin (something).
  3. misspellingMisspelling of crumb up.
Cite this entry
APA

crum up. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/crum%20up

MLA

“crum up.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/crum%20up. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “crum up,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/crum%20up.

Source: crum up on Wiktionary, CC BY-SA 4.0.