1. having a specified caliber or diameter (of a gun barrel, bullet, or similar object)
Usage: often used in compound form with a number or measurement; technical/military context
2. adjusted or set to a standard or reference point; calibrated
Usage: British spelling variant of 'calibrated'; less common in modern usage

Examples

• The rifle fires a .308 calibred round.
• A 9mm calibred pistol was recovered at the scene.
• The instrument was carefully calibred before the experiment began.
• The scale had been calibred to ensure accurate measurements.
• Different calibred ammunition is used for different hunting purposes.