Correct

/ pū /
Strokes

Definition

(onom.) pop/plop/pfff/putt-putt of a motor

Example

As an Onomatope

[sound of blowing air or spurting water] puff

1
Quánshuǐ
泉水
噗噗
de
wǎng
shàng
mào
  

Water kept gushing from the fountain.

2
kǒu
一口气
chuī
miè
le
yóudēng
油灯

blow out an oil lamp with one puff