duds

The United States has a sophisticated testing system that doesn’t require setting off explosions, and when it comes to deterrence, nobody in the world assumes that America’s arsenal is full of duds.

It can be hard for nonspecialist investors to distinguish the gems from the duds, or predict which companies are in line for government support.

There were also duds - far too many - but Gerrard was bullet proof.

They are intended to explode on impact but a significant proportion are "duds", meaning they do not explode initially.

The latter part of that post referred to the team’s second set of alternate duds: the Super Chargers uniforms.