(informal) any of several sports teams whose uniform is predominantly blue, such as:

plural of blue

(usually in the plural, informal) A noun "blues" represents a feeling of sadness or depression, one's particular life experience including hardships, and the negative emotional state produced by a particular action, occupation, experience, or idea.

(music) A musical form of african-american origin, characterized by an eight-bar or twelve-bar structure and the use of the blues scale, often referred to as a singular musical composition.

A uniform made principally of a blue fabric, and especially a full dress uniform thus colored.

(sports) A noun "blues" represents various sports teams, including carlton football club, new south wales rugby league, birmingham city fc, everton fc, chelsea fc, and manchester city fc, all of which wear blue kit.

(drug slang) Any of various blue pills sold on the street, mimicking the appearance of prescription pain killer tablets but often laced with fentanyl that leads to overdose deaths (see opioid epidemic).

third-person singular simple present indicative of blue