/ kuː; NAmE / verb , exclamation
■ verb ( coo·ing , cooed , cooed )
1.
[ v ] when a dove or a pigeon coos , it makes a soft low sound
2.
[ v , v speech ] to say sth in a soft quiet voice, especially to sb you love
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IDIOMS
see bill verb
► coo noun
■ exclamation
( BrE , informal ) used to show that you are surprised :
Coo, look at him!
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WORD ORIGIN
verb and noun mid 17th cent.: imitative.
exclamation early 20th cent.: imitative.