Bottoms up definition is - —used as a toast or to tell people to finish their drinks. How to use bottoms up in a sentence.
bottoms up! definition: sometimes said by people in a friendly way just before drinking an alcoholic drink together. Learn more.
To drink the contents of one's beverage. Used especially when alcohol is concerned. Literally to tilt the bottom of one's glass upward until it is empty.
Define Bottom's Up. Bottom's Up synonyms, Bottom's Up pronunciation, Bottom's Up translation, English dictionary definition of Bottom's Up. interj an informal.