WWordGenerator.org GeneratorsWord ListsBlogAboutGenerate a word Home / M / mail slot mail slot noun 9 letters Scrabble 10 WWF 13 Definitions noun a slot (usually in a door) through which mail can be delivered Look “mail slot” up elsewhere Wiktionary ↗ Merriam-Webster ↗ Etymonline ↗ Dictionary.com ↗ Want another word?Spin the dictionary for a fresh one. Generate a word →