Noun
(dialectal, US, New England) Coffee with cream and sugar (in contrast to the expected meaning of "black coffee" in other regions of the USA).
(dialectal, Canada) A coffee with one cream and one sugar.
Gimme three regular coffees and three blacks.
(dialectal) Black coffee
Coffee with caffeine (as opposed to decaffeinated).
(dialectal, US) American coffee, as opposed to espresso, or a derived coffee drink (cappuccino, latte, iced coffee, etc.)
Source: en.wiktionary.org