fifty-seventh I. \| ̷ ̷ ̷ ̷| ̷ ̷ ̷ ̷\adjective 1.: being number 57 in a countable series < the fifty-seventh day > — see number table 2.: being one of 57 equal parts into which something is divisible < a fifty-seventh share of the money > II. noun 1.: number 57 in a countable series 2.: the quotient of a unit divided by 57 : one of 57 equal parts of something < one fifty-seventh of the total >