開口

Verb

 * 1) to open one's mouth
 * 2) to start talking
 * 3) to laugh out loud
 * 4) to crack open
 * 5) to sharpen  before use
 * 6) to breach a dam
 * 7)  to eat

Noun

 * 1) opening

Noun

 * 1) an opening such as an open window
 * 2) opening one's mouth and starting to speak

Verb

 * 1) open one's mouth (and begin to speak)