bill and coo
美 
英 
- na.(鸽子)接嘴;〔比喻〕(男女间)互相接吻;亲热地抚爱[亲吻]
 - 网络谈情说爱;喁喁私语;相亲相爱
 
un.  | 1. to kiss and whisper intimately, as young lovers do, in a way thought to be reminiscent of the affectionate behaviour of doves 2. if two people bill and coo, they kiss each other and talk together in a romantic way  |