Lower the sail of a ship, particularly the topsail, or to decrease or reduce something.

(intransitive, nautical) To lower the topsail in token of surrender; to yield.

(archaic, literary) With all of one's might; mightily; forcefully, violently.

(archaic) At full speed; also, in great haste.

(Britain, dialectal) Out of control.

(obsolete) Exceedingly; overmuch.