a late entry, as a horse in a horse show or race.
Origin of post entry
First recorded in 1655–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for post entry
Historical Examples of post entry
They also informed Jeff that as his was a post-entry, it would cost him an extra fifty cents to exhibit his dog.Buff: A Collie and other dog-stories
Albert Payson Terhune