1(bound form) disciple; apprentice; believer; (derog.) wrongdoer (as in 騙徒|骗徒[pian4 tu2] "swindler" or 叛徒[pan4 tu2] "traitor" etc)
2(bound form) on foot
3(bound form) bare; empty
4(bound form) to no avail; in vain
5(bound form) merely; just; only
6(bound form) prison sentence