1. Noun

   measuring container; measuring box; measure

   灯火をますの下にかくすな。

2. box (seating at a theatre, etc.)

3. square on a grid; cell of a grid

   esp. マス

4. square bearing block (at the top of a pillar)

Also written 枡【ます】masu、桝【ます】masu、斗【ます】masu