吧嗒

bāda
  1. (onom.) patter, splatter, click
  2. to smack one's lips
  3. to pull (on a pipe)

CEDICT

onomatopoeic

Entry Composition

=1 吧 bā
  1. bar (loanword) (serving drinks, or providing Internet access etc)
  2. to puff (on a pipe etc)
  3. (onom.) bang
  4. abbr. for 贴吧 tiēbā
=1 吧 ba
  1. (modal particle indicating suggestion or surmise)
  2. ...right?
  3. ...OK?
  4. ...I presume.
2 嗒 da

synonym of 了 (“used after a verb to indicate perfective aspect”)