柱

pillar / CL:根[gen1]

owner / master / host / individual or party concerned / God / Lord / main / to indicate or signify / trump card (in card games)

(bound form) tree / (bound form) wood / unresponsive; numb; wooden

icicle

mainstay / cornerstone / tower of strength

column / cylinder

lit. to steal a rafter and replace it with a column / to replace the original with a fake / to perpetrate a fraud (idiom)

pillar / mainstay / star performer

light beam / light pillar (atmospheric optics)

hexagon socket head cap screw

lit. to support the sky as a single pillar (idiom) / fig. to take a crucial responsibility upon one's shoulders

triangular prism (math.)

cuboid / rectangular prism (math.)

(sports) (cricket) wicket (set of stumps and bails)