v. crooned, croon·ing, croons
1. To hum or sing softly.
2. To sing popular songs in a soft, sentimental manner.
3. Scots To roar or bellow.
To sing softly or in a humming way: crooning a lullaby.
A soft singing or humming.
[Middle English crounen, from Middle Dutch krōnen, to lament; see gerə-2 in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.