ピクン

adverb taking the 'to' particle

with a twitch; with a jerk; with a flutter

Describes a sudden, small, involuntary movement, often of a body part or object. Used adverbially with と.

See also: ピクッと

• まぶたがピクンと動うごいた。

  My eyelid twitched.

• 魚さかながピクンと跳はねた。

  The fish flopped with a jerk.