swordfish

中文： 剑鱼

1. A large marine fish with a long, pointed bill, Xiphias gladius. (countable, uncountable)
2. 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. (countable, uncountable)

复数 swordfish