Definition of bill and coo in English:

bill and coo

informal Exchange caresses or affectionate words; behave or talk in a very loving or sentimental way.
More example sentences
  • Humans - girl and boy - can learn from the strategies of the male bird when looking for a mate with whom to bill and coo.
  • My own personal wife and I hardly ever bill and coo early in the morning any more.
  • In The Abdication, they bill and coo once again-this time with spiritual fervor.
See parent entry: bill

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Word of the day oleaginous
Pronunciation: ˌōlēˈajənəs
adjective
rich in, covered with, or producing oil; oily