DICT.TW Dictionary Taiwan

 Coo v. i. [imp. & p. p. Cooed p. pr. & vb. n. Cooing.]
 1. To make a low repeated cry or sound, like the characteristic note of pigeons or doves.
 The stockdove only through the forest cooes,
 Mournfully hoarse.   --Thomson.
 2. To show affection; to act in a loving way. See under Bill, v. i. “Billing or cooing.”
 ◄ ►

 cooing
      adj : that is making a soft cry; "the cooing pigeons"