forty-first I. \| ̷ ̷ ̷ ̷| ̷ ̷\adjective 1.: being number 41 in a countable series < the forty-first day > — see number table 2.: being one of 41 equal parts into which something is divisible < a forty-first share of the money > II. noun 1.: number 41 in a countable series 2.: the quotient of a unit divided by 41 : one of 41 equal parts of something < one forty-first of the total >