ピクン

ピクン, ぴくんpikun

adverb

  1. with a twitch
  2. with a jerk
  3. with a flutter
  4. with a dip
  5. with a bob

Study it in Yanamino

Data from JMdict, KANJIDIC2 (EDRDG), KanjiVG, CC-CEDICT and Make Me a Hanzi. Sources and licences