Bible Dictionaries
Coo

Webster's Dictionary

(1):

(v. i.) To show affection; to act in a loving way. See under Bill, v. i.

(2):

(v. i.) To make a low repeated cry or sound, like the characteristic note of pigeons or doves.

Bibliography Information
Webster, Noah. Entry for 'Coo'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​c/coo.html. 1828.