dry pail noun 1verb 1forms 3 noun1 •A small basket or bucket or hanging wet bag, usually with holes to allow for airflow and sometimes without a lid, used to store soiled cloth diapers or, very rarely, disposable diapers; a diaper pail without water or cleaning solution.Other people have recommended a wastebasket with a tight-fitting lid. We didn't think at the time that that would provide enough odor containment; now I think that it would, for a dry pail system. — 2011 verb1 •(slang, rare) To use a dry pail. formsdry pailed · dry pailing · dry pails