Clang is a noise that a Spaceship or Station in the Game Space Engineers makes when it breaks. Usually because of sub grid damage done by rotors pistons or wheels. It can be word for a bug in Space Engineers. Most of the time Clang is used as a noun but it also can be used as a verb.
For example:
I hope Clang doesn't destroy my creation this time.
Oh no my Ship just clanged...