case shot

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A metal cylinder that is packed with shot and explodes in midair after being fired from a cannon, formerly used as an antipersonnel round.
• noun Such cylinders, or the shot used in such cylinders, considered as a group.

from The Century Dictionary.

• noun A collection of small projectiles, such as musket-balls, grapeshot, etc., put in cases, to be discharged from cannon. Also called canister-shot.
• noun In a more modern sense, a shrapnel-shell, that is, a spherical iron case inclosing powder and a number of bullets and exploded by a fuse. Also called case.

from the GNU version of the Collaborative International Dictionary of English.

• (Mil.) A collection of small projectiles, inclosed in a case or canister.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun military, historical A collection of small projectiles enclosed in a case or canister.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a metallic cylinder packed with shot and used as ammunition in a firearm