n.

1. 雨，雨水[U]
   Do you get much rain?

   你们那儿雨水多吗？

2. 降雨，一场雨[C]
3. （雨点般的）落下；（下雨般的）一阵[S][（+of）]
   A rain of abuse has been heaped upon him.

   他遭到好一顿咒骂。

4. 雨季[the P][K]

vi.

1. 下雨，降雨
   I think it's going to rain.

   我想快要下雨了。

2. 如雨般落下；雨水般地淌下[Q]

vt.

1. 使如雨下[O]
2. 大量地给[O]
   He rained gifts on his future bride.

   他给未来的新娘大批礼物。

n.

1. the condensed moisture of the atmosphere falling visibly in separate drops.
   ▸ (rains) falls of rain.
2. a large quantity of things falling or descending:
   a rain of blows.

v.

1. (it rains, it is raining, etc.) rain falls.
2. (be rained off or N. Amer. out) (of an event) be cancelled or interrupted because of rain.
3. fall or cause to fall in large quantities:
   bombs rained down.