パチ

noun, adverb taking the 'to' particle

snap; clap; crackle; sputter

Onomatopoeic word for a short, sharp sound like a book snapping shut, hands clapping, or a fire crackling. Often used adverbially with と.

• 本ほんをパチと閉とじた。

  I snapped the book shut.

• 焚たき火びがパチパチと音おとを立たてている。

  The campfire is crackling.

noun

pachinko

Slang abbreviation of パチンコ. Used in casual conversation, especially among enthusiasts.

See also: パチンコ

• 今日きょうはパチで負まけちゃった。

  I lost at pachinko today.