(construction, architecture) brace, prop, strut, supporting pillar, supporting column, post

宇宙飛行士: an astronaut (member of the crew of a spaceship or other spacecraft, or someone trained for that purpose)

(archaic) the central location of some larger geographic area

a harmful insect, an insect pest

(slang) Big breasts.

small breasts / someone who is flat-chested

witch's milk / (slang, uncommon) large breasts

(slang) Very big breasts.

breast milk; mother's milk

most active state, in progress, at one's best / the middle, midst, during / in one's prime