HSK C7-9
Correct

蓄

/ xù / 
Strokes

Definition

to store up/to grow (e.g. a beard)/to entertain (ideas)

Example

As a Verb
store/save up
1
Shuǐkù
水库
xù
蓄
mǎn
满
le
了
shuǐ
水
  
。

The reservoir is fully stored with water.

As a Verb
entertain (an idea); harbour
As a Verb
(of beard/hair) grow