(especially of viewers of a broadcast network) to connect within a network / (computing) to connect to the Internet

ball (sphere) / (basebal) ball (pitch that falls outside the strike zone)

bowl

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

ball (formal dance event)

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

ball person

disco ball, mirrorball

Synonym of 球技 (kyūgi, “ball game”)

Clipping of インターネットカフェ (Intānetto kafe, “Internet cafe”).