パチンwith a click, with a snap, ornamental clip (hair, obi, etc.)

パチンと指(ゆび)を鳴(な)らす。

Snap one's fingers with a click. {with a click, with a snap, ornamental clip (hair, obi, etc.)}

洋服(ようふく)のスナップをパチンと留(と)めました。

I secured the snap on the clothes with a click. {with a click, with a snap, ornamental clip (hair, obi, etc.)}

爪(つめ)をパチンと切(き)ったらどこかへ飛(と)んでいった。

When I clipped my nail with a snap, it flew off somewhere. {with a click, with a snap, ornamental clip (hair, obi, etc.)}

親指(おやゆび)と中指(なかゆび)を勢(いきお)いよく擦(こす)らせてパチンと音(おと)を出(だ)しましょう。

Let's briskly rub our thumb and middle finger together to make a sound with a snap. {with a click, with a snap, ornamental clip (hair, obi, etc.)}

ハンドバッグの留(と)め具(ぐ)をパチンと閉(し)めて中身(なかみ)が溢(あふ)れないようにした。

I closed the clasp of the handbag with a snap to prevent the contents from spilling out. {with a click, with a snap, ornamental clip (hair, obi, etc.)}