基本解释笑得在地上打滚；非常可笑，令人捧腹（网络聊天室用语，rolling on the floor laughing的缩写，表示觉得某事非常好笑）。同根派生 英英字典剑桥英英字典 written abbreviation for rolling on the floor laughing: used, for example in an internet chat room, to show that you think something is very funny