Something or someone disagreeable, dispiriting or depressing; a killjoy.
A livestock animal that has collapsed.
A negative drug trip.
A form of industrial action in which workers down tools and refuse to work.
A drug that has depressant qualities.
A thing or occurrence which initially causes fear, distress, etc. but which is subsequently recognized as being no cause for concern.
A warning signal (such as the call of sentry, the ringing of a bell, or the shriek of a siren) which turns out to have been given erroneously.