[noun] a ventilation shaft through which air enters a mine
[adjective] directed downward; "a downcast glance"
[adjective] low in spirits; "lonely and blue in a strange city"; "depressed by the loss of his job"; "a dispirited and resigned expression on her face"; "downcast after his defeat"; "feeling discouraged and downhearted" Synonyms:blue, depressed, dispirited, down, downhearted, down in the mouth, low, low-spirited