Any species of game fish belonging to either of the genera Tetrapturus or Makaira. Every such species has a pointed, spear-like projection of the upper jaw.
A large marine fish with a long, pointed bill, Xiphias gladius.
A sudoku technique involving possible cell locations for a digit, or pair, or triple, in uniquely three rows and three columns only. This allows for the elimination of candidates around the grid.
To fish for swordfish.