MAILBOX Scrabble 18 Words With Friends 21 Scrabble letter values: M3A1I1L1B3O1X8 = 18 Definition noun a private box for delivery of mail. — synonyms: letter_box noun public box for deposit of mail. — synonyms: postbox, letter_box See all 69 words you can make from MAILBOX → 7-letter words Words starting with M Words ending with X ← Unscramble different letters