tap something out

Từ điển Oxford Advanced Learner 8th

▪ I. ˌtap sthˈout derived
1. to hit a surface gently to the rhythm of music
•She tapped out the beat on the table.
2. to write sth using a computer or a mobile/cell phone
•I tapped out a text message to Mandy.
Main entry: ↑tap_derived
 
▪ II. ˌtap sthˈin/ˈout derived
to put information, numbers, letters, etc. into a machine by pressing buttons
•Tap in your PIN number.
•He tapped out a few words on the keyboard.
Main entry: ↑tap_derived