I .
dry out | ˌdry sb ↔ ˈout
( informal ) to stop drinking alcohol after you have continuously been drinking too much; to cure sb of drinking too much alcohol :
He went to an expensive clinic to dry out.
II .
dry out | ˌdry sth ↔ ˈout
to become or to allow sth to become dry, in a way that is not wanted :
Water the plant regularly, never letting the soil dry out.
Hot sun and cold winds can soon dry out your skin.