ball (formal dance event)

Short for ボール紙 (bōru-gami): non-corrugated cardboard, pasteboard / Short for 段ボール (danbōru): corrugated cardboard

disco ball, mirrorball

ball person

Synonym of 球技 (kyūgi, “ball game”)

(baseball, softball) Synonym of 四球 (shikyū, “walk”)

to stretch one's legs out / (figuratively) to reach one's destination and then proceed to go further

(idiomatic) to let your hair down; to have fun after a period of work or stress

(idiomatic) to have something on someone; to catch someone out; to trip someone up; to have evidence; to get a lead / to grab by the tail

(idiomatic) to grab (someone) by the collar