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Noun: coo  koo
  1. The sound made by a pigeon
Verb: coo  koo
  1. Speak softly or lovingly
    "The mother who held her baby was cooing softly"
  2. Cry softly, as of pigeons

Sounds like: coup

Derived forms: cooed, cooing, coos

Type of: cry, emit, let loose, let out, murmur, utter

Encyclopedia: Coo