from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The diameter of the inside of a round cylinder, such as a tube.
- n. The diameter of the bore of a firearm, usually shown in hundredths or thousandths of an inch and expressed in writing or print in terms of a decimal fraction: .45 caliber.
- n. The diameter of a large projectile, such as an artillery shell, measured in millimeters or in inches.
- n. Degree of worth; quality: a school of high caliber; an executive of low caliber.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. US spelling of calibre.
from the GNU version of the Collaborative International Dictionary of English
- n. The diameter of the bore, as a cannon or other firearm, or of any tube; or the weight or size of the projectile which a firearm will carry.
- n. The diameter of round or cylindrical body, as of a bullet or column.
- n. Fig.: Capacity or compass of mind.
from The Century Dictionary and Cyclopedia
- n. The diameter of a body, especially of the hollow inside of a cylinder: as, the caliber of a piece of ordnance or other firearm.
- n. Figuratively, compass or capacity of mind; the extent of one's intellectual endowments.
- n. In horology: The distance between the two plates of a watch which determines the flatness of the movement.
- n. The plate upon which is traced the arrangement of the pieces of a clock; the pattern-plate.
- In gunnery, to ascertain the caliber of; calibrate. See caliper.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a degree or grade of excellence or worth
- n. diameter of a tube or gun barrel
French calibre, from Italian calibro, from Arabic qālib, qālab, mold, shoe tree, from Greek kālapous, shoemaker's last : kālon, wood + pous, foot.(American Heritage® Dictionary of the English Language, Fourth Edition)