American Ornithologists' Union.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use A.O.U. in a sentence
The correct position of the tongue, preparatory to singing, is gained by saying the vowel sound aou, as if about to yawn.How to Sing | Lilli Lehmann
After passing all these places, they came to a country named Ma-t'aou-lo.Record of Buddhistic Kingdoms | Fa-Hsien
Those little cats in the AOU have done the meanest thing you can think of.Cloudy Jewel | Grace Livingston Hill