bet one's bottom dollar, one can

bet one's bottom dollar, one can

One may be very certain of something. Bottom here means last, or the bottom of a pile of gambling chips. An American colloquialism of the mid-nineteenth century, the phrase became a cliché in the mid-twentieth century.
See also: bet, bottom, can, one
The Dictionary of Clichés by Christine Ammer
See also:
  • from the bottom of (one's) heart
  • from the bottom of heart
  • from the bottom of my heart
  • from the bottom of one's heart
  • from the bottom of your heart
  • lie at the bottom of (something)
  • be at the bottom of (something)
  • be at the bottom of something
  • you can bet your bottom dollar (on something)
  • at bottom