
1) Ammunition
Found on
https://www.crosswordclues.com/clue/cannelure

groove or fluting
Found on
http://phrontistery.info/c.html

• (n.) A groove in any cylinder; specif., a groove around the cylinder of an elongated bullet for small arms to contain a lubricant, or around the rotating band of a gun projectile to lessen the resistance offered to the rifling. Also, a groove around the base of a cartridge, where the extractor takes hold.
Found on
http://thinkexist.com/dictionary/meaning/cannelure/
Can'ne·lure (kăn'ne*lur)
noun [ French, from
canneler to groove.]
(Mil.) A groove in any cylinder; specif., a groove around the cylinder of an elongated bullet for small arms to contain a lubricant, or around the rotating band of a gun projectile to lessen the resistance offered to the...
Found on
http://www.encyclo.co.uk/webster/C/16

A crimped or knurled groove, rolled onto a bullet or the neck of a cartridge case, either to help retain a bullet in its case or to provide a space for bullet lubricant.
Found on
http://www.hallowellco.com/abbrevia.htm

A cannelure is a groove machined or pressed around the body of a bullet to allow the neck of a cartridge case to grip the bullet.
Found on
http://www.probertencyclopaedia.com/browse/FC.HTM

The cannelure is the groove around a bullet. It is usually the cannelure that the very end of the case is crimped into to make the bullet head more secure in the case, usually in military applications where repeated heavy recoil could otherwise cause the bullets in the cartridges to recede into the cases.
Found on
http://www.riflesintheuk.com/glossary.htm
No exact match found.