What does the word keg mean?

Usage examples for keg

  1. If, however, a customer comes in for, say, seven pounds of nails, we want him to take twenty- eight pounds, or a keg, if we can. – Dawson Black: Retail Merchant by Harold Whitehead
  2. Kate's old boyfriend was standing by the keg. – Joe Burke's Last Stand by John Moncure Wetterau
  3. There he is on the comb of that sea, rolling over like a keg! – Jack Tier or The Florida Reef by James Fenimore Cooper