Princeton's WordNet

1. quality, caliber, calibre(noun)

   a degree or grade of excellence or worth

   "the quality of students has risen"; "an executive of low caliber"

2. bore, gauge, caliber, calibre(noun)

   diameter of a tube or gun barrel

Wiktionary

1. calibre(Noun)

   Diameter of the bore of a firearm, typically measured between opposite lands.

2. calibre(Noun)

   The diameter of round or cylindrical body, as of a bullet, a projectile, or a column.

3. calibre(Noun)

   A nominal name for a cartridge type, which may not exactly indicate its true size and may include other measurements such as cartridge length or black powder capacity. Eg 7.62x39 or 38.40.

4. calibre(Noun)

   Unit of measure used to express the length of the bore of a weapon. The number of calibres is determined by dividing the length of the bore of the weapon, from the breech face of the tube to the muzzle, by the diameter of its bore. A gun tube the bore of which is 40 feet (480 inches) long and 12 inches in diameter is said to be 40 calibers long.

5. calibre(Noun)

   Relative size, importance, magnitude.

6. calibre(Noun)

   Capacity or compass of mind.

7. calibre(Noun)

   : Degree of importance or station in society.

Origin: From calibre. Origin uncertain, perhaps, from qua libra

Webster Dictionary

1. Calibre(noun)

   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

2. Calibre(noun)

   the diameter of round or cylindrical body, as of a bullet or column

3. Calibre(noun)

   fig.: Capacity or compass of mind

• deursneeAfrikaans
• قُطْر ماسورَةِ البُنْدُقِيَّهArabic
• калибърBulgarian
• calibrePortuguese (BR)
• rážeCzech
• das KaliberGerman
• kaliberDanish
• διαμέτρημαGreek
• calibreSpanish
• kaliiber, läbimõõtEstonian
• کالیبر؛ قطر داخلی لولۀ تفنگFarsi
• kaliiperiFinnish
• calibreFrench
• קָלִיבֵּר, קוֹטֶר פְּנִימִיHebrew
• बन्दुक या नली का व्यासHindi
• kalibar, promjer cijeviCroatian
• kaliber,átmérőHungarian
• kaliberIndonesian
• hlaupvíddIcelandic
• calibroItalian
• 口径Japanese
• 내경(內徑)Korean
• kalibrasLithuanian
• kalibrsLatvian
• saiz pistol/senapangMalay
• kaliberDutch
• kaliberNorwegian
• kaliberPolish
• کالیبر؛ قطر داخلی لولۀ تفنگPersian
• دقطراندازه: دفكر ګنجايش: لياقت: ظرفيټ، اهليتPashto
• calibrePortuguese
• calibruRomanian
• калибрRussian
• kaliberSlovak
• kaliberSlovenian
• kalibarSerbian
• kaliberSwedish
• ขนาดลำกล้องของปืนThai
• iç çapTurkish
• 口徑Chinese (Trad.)
• калібрUkrainian
• بندوق کی نالی کا اندرونی حصہUrdu
• cỡ nòngVietnamese
• 口径Chinese (Simp.)