1bar (loanword) (serving drinks, or providing Internet access etc)
2to puff (on a pipe etc)
3(onom.) bang
4abbr. for 貼吧|贴吧 (貼吧|贴吧 · Baidu Tieba, lit. "Baidu Post Bar", a Chinese online forum hosted by Baidu Inc.)
5(modal particle indicating suggestion or surmise)
6...right?
7...OK?
8...I presume.