Definition of subcalibre in English:

subcalibre

adjective

  • Of a projectile: smaller in calibre than the gun from which it is fired, and typically discharged from a secondary tube set inside the main barrel.

Origin

Mid 19th century; earliest use found in Boston Daily Advertiser. From sub- + calibre.

Pronunciation

subcalibre

/ˌsʌbˈkalɪbə/