vt.

1. 使发出咯咯声
   A cold November wind rattled the windows.

   十一月的寒风刮得窗户格格作响。

2. 【口】使窘迫不安，使惊惶失措；使恼火
   She seemed rattled about our presence.

   我们在场她显得惊恐不安。

3. 使觉醒；使振作[（+up）]
4. 从（隐藏处）惊出猎物

vi.

1. 发出咯咯声
   The window rattled in the wind.

   窗户在风中嘎嘎作响。

2. 喀嚓喀嚓行进[Q]
   The old wagon rattled down the road.

   破旧的四轮运货马车喀嚓喀嚓地行进在路上。

3. 喋喋不休地讲话[（+on/away）]
   The children rattled away merrily.

   孩子们兴高采烈地哇啦哇啦讲个不停。

n.

1. 咯咯声；吵闹声[S]
   We could hear the rattle of milk bottles.

   我们可以听到牛奶瓶的碰击声。

2. 发出咯咯声的东西；（婴儿玩的）拨浪鼓[C]
   The baby was playing with the rattle.

   婴儿在玩拨浪鼓。

3. 响尾蛇尾端的响环[C]
4. 喋喋不休的空话；喋喋不休的人[S1][U]

v.

1. make or cause to make a rapid succession of short, sharp knocking sounds.
   ▸move or travel with a knocking sound:

   trains rattled past.
2. informal make nervous, worried, or irritated.
3. (rattle about/around in) be in or occupy (an unnecessarily large space).
4. (rattle something off) say, perform, or produce something quickly and effortlessly.
5. (rattle on/away) talk rapidly and at length.

n.

1. a rattling sound.
2. a thing that makes a rattling sound, in particular a baby's toy consisting of a container filled with small pellets.
   ▸the set of horny rings at the end of a rattlesnake's tail.
3. a gurgling sound in the throat.
4. archaic a person who chatters constantly.