Drink flavoring

• Pink Gin ingredient
• Alcoholic liquor flavored with bitter herbs and roots
• Mai-tai ingredient
• Cocktail flavoring
• Bar mixer

Wiktionary Word definitions in Wiktionary
n. A liquid used in mixed drinks or as a tonic into which bitter herbs have been steeped (it can also be found in powdered form for adding to mixed drinks).

WordNet Word definitions in WordNet
n. alcoholic liquor flavored with bitter herbs and roots

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Bitters \Bit"ters\, n. pl. A liquor, generally spirituous in which a bitter herb, leaf, or root is steeped.

Wikipedia Word definitions in Wikipedia
A bitters is traditionally an alcoholic preparation flavored with botanical matter such that the end result is characterized by a bitter , sour , or bittersweet flavor . Numerous longstanding brands of bitters were originally developed as patent medicines ...