bill and coo

idiom

Definition of bill and coo

old-fashioned
: to kiss and talk quietly A young couple sat together in the corner, billing and cooing.

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“Bill and coo.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/bill%20and%20coo. Accessed 15 Jul. 2020.

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