In computing, to drag is to click the mouse button and hold it down while moving the mouse.
In music, to drag is to play slower than the indicated tempo.
In drumming, a drag (also called a "ruff") is one of the twenty-six rudiments, consisting of two light strokes with one hand followed by a strong stroke with the opposite hand.
In agriculture, a drag is a heavy type of harrow, used to break up ground.
Drag is slang for any costume, but particularly for clothes of one gender worn by the opposite gender.