[kai1 kou3] /to open one's mouth/to start to talk/
  [kai1 kou3] /ouvrir la bouche/se mettre à parler/aiguiser un couteau neuf/ouvrir une brèche/
 [かいこう] /(n,vs) (1) opening/aperture (e.g. camera)/(2) opening one's mouth/beginning to speak/(adj-f) (3) open/broad/(P)/EntL1202640X/
Visszatérés a(z) „開口” laphoz.