螺旋千斤頂

screw jack

spiral shell / snail / conch

spiral / helix / screw

to revolve / a loop / a circle

to whirl / immediately / variant of 鏇|镟[xuan4]

thousand

see 鞦韆|秋千[qiu1 qian1]

catty / (PRC) weight equal to 500 g / (Tw) weight equal to 600 g / (HK, Malaysia, Singapore) slightly over 604 g

jack (for lifting weight)

apex / crown of the head / top / roof / most / to carry on the head / to push to the top / to go against / to replace / to substitute / to be subjected to (an aerial bombing, hailstorm etc) / (slang) to "bump" a forum thread to raise its profile / classifier for headwear, hats, veils etc