- (nautical) 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.
- (figuratively) To take opposite positions alternately; to assert and deny.
Part or all of this entry has been imported from the 1913 edition of Webster's Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
back-and-fill - Investment & Finance Definition
Price action, for a stock or other financial instrument, that isn’t indicative of a substantial trend; prices remain in a narrow range. Prices rise, but then fall back, filling in the space on a price chart inside a larger price movement.