noun
1. The diameter of something of circular section, especially that of the inside of a tube.
2. Ordnance. The diameter of the bore of a gun, taken as a unit of measurement.
3. Degree of capacity or competence, ability.
4. Degree of merit or excellence; quality.
5. Slang. Breast size.
EX. "I like to see girls of that...caliber. [pause] By "caliber", of course, I refer to both the size of their "gun barrels" and the high quality of their characters...it's a homonym...forget it." - Doctor Evil, Austin Powers: International Man of Mystery
