'To clean out' definitions:

Definition of 'To clean out'

From: GCIDE
  • Clean \Clean\ (kl[=e]n), v. t. [imp. & p. p. Cleaned (kl[=e]nd); p. pr. & vb. n. Cleaning.] [See Clean, a., and cf. Cleanse.] To render clean; to free from whatever is foul, offensive, or extraneous; to purify; to cleanse. [1913 Webster]
  • To clean out, to exhaust; to empty; to get away from (one) all his money. [Colloq.] --De Quincey. [1913 Webster]