(+ adv./prep.) to walk with short steps, moving your body from side to side, like a duck（鸭子似的）蹒跚行走，摇摆地行走- A short plump man came waddling towards me.一个矮矮胖胖的男人向我蹒跚走来。
Oxford Collocations DictionaryWaddle is used with these nouns as the subject: See full entry Word Originlate 16th cent.: perhaps a frequentative of wade.