American English

Definition of coo verb from the Oxford Advanced American Dictionary



    Verb Forms present simple I / you / we / they coo
    he / she / it coos
    past simple cooed
    -ing form cooing
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  1. 1[intransitive] when a dove 1or a pigeon coos, it makes a soft low sound
  2. 2[intransitive, transitive] (+ speech) to say something in a soft quiet voice, especially to someone you love
  3. Idioms
    bill and coo (old-fashioned) (informal)
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    if two people who are in love bill and coo, they kiss and speak in a loving way to each other

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