SECOBARBITAL Scrabble 18 Words With Friends 22 Definition noun barbiturate that is a white odorless slightly bitter powder (trade name Seconal) used as a sodium salt for sedation and to treat convulsions. — synonyms: secobarbital_sodium, Seconal, red_devil See all 1494 words you can make from SECOBARBITAL → 12-letter words Words starting with S Words ending with L ← Unscramble different letters