(1)動詞「乾く」の丁寧語。
さらに詳しく
(1)水や水分がなくなる
(2)lose water or moisture; "In the desert, you get dehydrated very quickly"
(1)湿気の損失と同時にしぼむ
(2)wither, as with a loss of moisture
(3)wither, as with a loss of moisture; "The fruit dried and shriveled"