叔叔shū·shu 1.same as叔父{shūfù}: 亲～{father's younger brother (as compared with father's stepbrother or father's cousin)}|堂房～。{father's male cousin} 2.称呼跟父亲辈分相同而年纪较小的男子{(form of address for a man of one's father's generation but younger than one's father) uncle}: 刘～{Uncle Liu}|工人～{uncle worker}|解放军～。{uncle PLA}