(countable) An act of looking downwards, usually as a sign of discouragement, sadness, etc., or sometimes modesty; hence , dejection, melancholy.

(countable, computing) A cast (“change of expression of a data type”) from supertype to subtype.

(countable, mining, chiefly attributive) A ventilating shaft down which air passes in circulating through a mine.

To turn (the eyes) downwards, usually as a sign of discouragement, sadness, etc., or sometimes modesty.

To cast or throw (something) downwards; also, to drop or lower (something).

To demolish or tear down (a building, etc.).

(figurative) To make (someone) feel despondent or discouraged; to discourage, to sadden.

(computing) To cast (“change the expression of”) (a data type) from supertype to subtype.

(Scotland) To reproach or upbraid (someone); also, to taunt (someone).

Of the eyes, a facial expression, etc.: looking downwards, usually as a sign of discouragement, sadness, etc., or sometimes modesty.

Of a person or thing: cast or thrown to the ground.

Of a thing: directed downwards.

(figurative) A person or thing that is feeling despondent or discouraged, defeated, overthrown, destroyed, or ruined.