Battering ram and Crack-up

Battering ram noun - A ram used to break down doors of fortified buildings.

Crack-up and battering ram are semantically related. In some cases you can use "Crack-up" instead a noun phrase "Battering ram".

Crack-up noun - A mental or nervous collapse.

Battering ram and crack-up are semantically related. Sometimes you can use "Battering ram" instead a noun phrase "Crack-up".