noun [ U ] uk / mʌd / us / mʌd / Add to word list. B2. earth that has been mixed with water. 泥，泥土;爛泥，泥漿;淤泥. The vehicles got bogged down in the heavy mud. 車輛深陷淤泥，動彈不得。 Modern houses have replaced the one-room mud huts with grass roofs that had been home to generations of peasants. 新式住房取代了農民世代居住的單間草頂土屋。