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Webster 1913 Edition

Noun.

Downcast or melancholy look.

That

downcast

of thine eye.

Beau. & Fl.

(Mining)

A ventilating shaft down which the air passes in circulating through a mine.

Adj.

Cast downward; directed to the ground; as a downcast eye or look, indicating bashfulness, modesty or dejection of mind.

Noun.

Sadness; melancholy look.