The word that describes a kids' spelling contest is "spelling bee". It is a competition where contestants are given words to spell correctly, and the winner is the last person standing who has correctly spelled all the words given to them. Spelling bees are usually held at schools or community events, and they are an excellent way to improve vocabulary, spelling skills, and confidence. The Spelling Bee is a popular contest in which numerous kids participate every year, and it has gained widespread recognition due to its educational value.