dynamite

Concise Oxford English Dictionary © 2008 Oxford University Press:
dynamite/ˈdʌɪnəmʌɪt/

▶noun

• 1 a high explosive consisting of nitroglycerine mixed with an absorbent material.

• 2 informal an extremely impressive or potentially dangerous person or thing.

▶verb blow up with dynamite.

– derivatives
dynamiter noun.

– origin C19: from Gk dunamis ‘power’ + -ite1.