Dud

Ultimately from dudde ("ragged clothing or cloth"), of uncertain origin beyond that.

Full definition of dud

(plural duds)

(informal) A device or machine that is useless because it does not work properly or has failed to work, such as a bomb, or explosive projectile.
A lottery ticket that does not give a payout.
(obsolete) Clothes, now always used in plural form duds.
A loser, an unlucky person