Meaning : At or on or to the masthead or upper rigging of a ship.
Example :
Climbed aloft to unfurl the sail.
Meaning : Upward.
Example :
The good news sent her spirits aloft.
Meaning : At or to great height. High up in or into the air.
Example :
Eagles were soaring aloft.
Dust is whirled aloft.
Meaning : In the higher atmosphere above the earth.
Example :
Weather conditions aloft are fine.