billing and cooing

== English == === Noun === billing and cooing (countable and uncountable, plural billings and cooings) Cooing and rubbing of beaks, performed by birds such as pigeons and doves as a prelude to mating. Loving and affectionate behaviour between members of a romantic couple, such as the exchange of caresses and kisses. === Verb === billing and cooing present participle and gerund of bill and coo