What is the meaning of Can_opener?

A device used to open tin cans, usually by slicing the lid off.

A shoulder hit to the chest, usually accomplished while moving from a crouched to a standing position.

A tool for safe-cracking.

A ramming maneuver, that opens up the target ship like a tin can.

An anti-tank munition or attack vehicle, that opens up armour like a tin can.

Source: wiktionary.org