Definitions
1.nounA negative drug trip."Normally those pills give me a boost, but last night they gave me a downer."
2.nounA drug that has depressant qualities.
3.nounSomething or someone disagreeable, dispiriting or depressing; a killjoy.
4.nounA livestock animal that has collapsed.
5.nounA form of industrial action in which workers down tools and refuse to work.