Definitions
1.noun(usually in the plural bitters) A liquid or powder, made from bitter herbs, used in mixed drinks or as a tonic.
2.nounA type of beer heavily flavored with hops.
3.nounA turn of a cable about the bitts.
4.verbTo make bitter.
5.adjectiveHaving an acrid taste (usually from a basic substance)."The coffee tasted bitter."
6.adjectiveHarsh, piercing or stinging.
7.adjectiveHateful or hostile."They're bitter enemies."
8.adjectiveCynical and resentful."I've been bitter ever since that defeat."