Condition 1
Cocked and locked: a round chambered, hammer cocked, manual safety engaged.
Also: cocked and locked
Condition 1 is the safest carry condition for a single-action pistol like a 1911: round chambered, hammer cocked, thumb safety on. Cooper defined four conditions (1 through 4) describing the readiness state of a SA pistol. Condition 1 = cocked and locked. Condition 4 = chamber empty, magazine out — the storage state.