A piece of fabric sewn together and fitted to the spars and rigging of a vessel so as to convert the force of the wind into forward motion of the vessel, A fleet, To spread more sail; hasten on by spreading more sail, intransitive verb_ To be impelled or driven forward by the action of wind upon sails, as a ship on water; to be impelled on a body of water by the action of steam or other power, To be conveyed in a vessel on water; to pass by water, To navigate or manage (a vessel), transitive verb_ To pass or move upon, as in a ship, by means of sails; hence, to move or journey upon (the water) by means of steam or other force, To fly through; to glide or move smoothly through, To direct or manage the motion of, as a vessel