tooth·ing /ˈtuːθɪŋ/ noun [uncountableU] when someone uses a mobile phone with a bluetooth connection to send a message to another person near them who also has a Bluetooth mobile phone, arranging to have sex with them 牙约〔利用手机的蓝牙功能给附近使用蓝牙手机的人发短信,约其发生性关系〕