Coo \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.
[1913 Webster]
The stockdove only through the forest cooes,
Mournfully hoarse. --Thomson.
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2. To show affection; to act in a loving way. See under
{Bill}, v. i. "Billing or cooing." --Byron.
[1913 Webster] Cooey