central figure, pillar (e.g. of the nation), mainstay, chief support, leader, chief, boss, leader, head, master carpenter, beams and ridge supports of a roof
上棟【じょうとう】
raising the ridgepole
棟【むね】
ridge (of roof), back of a sword, counter for buildings, apartments, etc.
棟【とう】
large building, building with a long roof, counter for buildings, apartments, etc.