METHICILLIN Scrabble 18 Words With Friends 22 Scrabble letter values: M3E1T1H4I1C3I1L1L1I1N1 = 18 Definition noun antibiotic drug of the penicillin family used in the treatment of certain staphylococcal infections. See all 175 words you can make from METHICILLIN → 11-letter words Words starting with M Words ending with N ← Unscramble different letters