1
- no obj. casually make a series of sounds on a horn, trumpet, or similar instrument连续轻吹（号角、喇叭等）; 连续发出漫不经心的嘟嘟声：
he tootled on the horn.
他嘟嘟地连续按着喇叭。
1.1
- with obj. play (an instrument) or make (a sound or tune) in such a way弹奏（乐器）以发出连续的嘟嘟声：
the video games tootled their tunes.
电视游戏不断发出嘟嘟声。
2
- no obj., with adverbial of direction informal go or travel in a leisurely way〈非正式〉悠闲地走（或旅行）：
they were tootling along the coast road.
他们在海边公路上漫步。
usu. in sing.
1
- an act or sound of casual playing on an instrument such as a horn or trumpet嘟嘟的吹奏, 嘟嘟的吹奏声。
2
- informal a leisurely journey〈非正式〉悠闲的旅行。
词源
early 19th cent.: frequentative of TOOT.