What is "outyell"

Usage examples of "outyell".

The chances are they are very jealous because she is outyelling them, because I will say one thing for our little doll, she can yell about as loud as anybody I ever hear, male or female.

Then he wrote lines to April Elgar: Edwardian brass, O enigmatic kingdom, Apostolic musicmaker, nobilmente Clashes the green roots, outyells returning swifts, Derides the cuckoocall.