'To keel over' definitions:

Definition of 'To keel over'

From: GCIDE
  • Keel \Keel\, v. i. [imp. & p. p. Keeled; p. pr. & vb. n. Keeling.]
  • 1. To traverse with a keel; to navigate. [1913 Webster]
  • 2. To turn up the keel; to show the bottom. [1913 Webster]
  • To keel over, to upset; to capsize. [Colloq.] [1913 Webster]