a. [ AS. feówertigo&unr_;a. See Forty. ] 1. Following the thirty-ninth, or preceded by thirty-nine units, things, or parts. [ 1913 Webster ]
2. Constituting one of forty equal parts into which anything is divided. [ 1913 Webster ]
n. One of forty equal parts into which one whole is divided; the quotient of a unit divided by forty; one next in order after the thirty-ninth. [ 1913 Webster ]