Caliber rule
Caliber Cal"i*ber, Calibre Cal"ibre, n. [F. calibre, perh. fr. L. qualibra of what pound, of what weight; hence, of what size, applied first to a ball or bullet; cf. also Ar. q[=a]lib model, mold. Cf. {Calipers}, {Calivere}.] [1913 Webster] 1. (Gunnery) 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; as, an 8 inch gun, a 12-pounder, a 44 caliber. [1913 Webster]

The caliber of empty tubes. --Reid. [1913 Webster]

A battery composed of three guns of small caliber. --Prescott. [1913 Webster]

Note: The caliber of firearms is expressed in various ways. Cannon are often designated by the weight of a solid spherical shot that will fit the bore; as, a 12-pounder; pieces of ordnance that project shell or hollow shot are designated by the diameter of their bore; as, a 12 inch mortar or a 14 inch shell gun; small arms are designated by hundredths of an inch expressed decimally; as, a rifle of .44 inch caliber. [1913 Webster]

2. The diameter of round or cylindrical body, as of a bullet or column. [1913 Webster]

3. Fig.: Capacity or compass of mind. --Burke. [1913 Webster]

{Caliber compasses}. See {Calipers}.

{Caliber rule}, a gunner's calipers, an instrument having two scales arranged to determine a ball's weight from its diameter, and conversely.

{A ship's caliber}, the weight of her armament. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Caliber rule — Rule Rule, n. [OE. reule, riule, OF. riule, reule, F. r[ e]gle, fr. L. regula a ruler, rule, model, fr. regere, rectum, to lead straight, to direct. See {Right}, a., and cf. {Regular}.] 1. That which is prescribed or laid down as a guide for… …   The Collaborative International Dictionary of English

  • caliber rule — noun obsolete : a gunmaker s calipers * * * caliber rule, a caliper rule …   Useful english dictionary

  • Rule — Rule, n. [OE. reule, riule, OF. riule, reule, F. r[ e]gle, fr. L. regula a ruler, rule, model, fr. regere, rectum, to lead straight, to direct. See {Right}, a., and cf. {Regular}.] 1. That which is prescribed or laid down as a guide for conduct… …   The Collaborative International Dictionary of English

  • Rule joint — Rule Rule, n. [OE. reule, riule, OF. riule, reule, F. r[ e]gle, fr. L. regula a ruler, rule, model, fr. regere, rectum, to lead straight, to direct. See {Right}, a., and cf. {Regular}.] 1. That which is prescribed or laid down as a guide for… …   The Collaborative International Dictionary of English

  • Rule of the road — Rule Rule, n. [OE. reule, riule, OF. riule, reule, F. r[ e]gle, fr. L. regula a ruler, rule, model, fr. regere, rectum, to lead straight, to direct. See {Right}, a., and cf. {Regular}.] 1. That which is prescribed or laid down as a guide for… …   The Collaborative International Dictionary of English

  • Rule of three — Rule Rule, n. [OE. reule, riule, OF. riule, reule, F. r[ e]gle, fr. L. regula a ruler, rule, model, fr. regere, rectum, to lead straight, to direct. See {Right}, a., and cf. {Regular}.] 1. That which is prescribed or laid down as a guide for… …   The Collaborative International Dictionary of English

  • Rule of thumb — Rule Rule, n. [OE. reule, riule, OF. riule, reule, F. r[ e]gle, fr. L. regula a ruler, rule, model, fr. regere, rectum, to lead straight, to direct. See {Right}, a., and cf. {Regular}.] 1. That which is prescribed or laid down as a guide for… …   The Collaborative International Dictionary of English

  • Caliber — Cal i*ber, Calibre Cal ibre, n. [F. calibre, perh. fr. L. qualibra of what pound, of what weight; hence, of what size, applied first to a ball or bullet; cf. also Ar. q[=a]lib model, mold. Cf. {Calipers}, {Calivere}.] [1913 Webster] 1. (Gunnery)… …   The Collaborative International Dictionary of English

  • Caliber compasses — Caliber Cal i*ber, Calibre Cal ibre, n. [F. calibre, perh. fr. L. qualibra of what pound, of what weight; hence, of what size, applied first to a ball or bullet; cf. also Ar. q[=a]lib model, mold. Cf. {Calipers}, {Calivere}.] [1913 Webster] 1.… …   The Collaborative International Dictionary of English

  • Caliber — The term caliber or calibre designates the interior diameter of a tube or the exterior diameter of a wire or rod. It comes from the French calibre , itself from qālib (قالب), Arabic word for mold , itself from kalamoys , Greek word for wooden… …   Wikipedia

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