To back and fill
Also found in: Idioms.
|to manage the sails of a ship so that the wind strikes them alternately in front and behind, in order to keep the ship in the middle of a river or channel while the current or tide carries the vessel against the wind.|
|To take opposite positions alternately; to assert and deny.|
|to grow or become quite full; as, the channel of the river fills up with sand.|
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.