HSK 2 HSK C1/W1/V1
Correct

吧

/ bā / 
Strokes

Definition

bar (loanword) (serving drinks, or providing Internet access etc)/to puff (on a pipe etc)/(onom.) bang/abbr. for 贴吧[tiē bā]

Example

As an Onomatope

puff at one's pipe

As a Verb

bar