(1):

(n.) The octave of the seventh.

(2):

(n.) One of fourteen equal parts into which one whole may be divided; the quotient of a unit divided by fourteen; one next after the thirteenth.

(3):

(a.) Making or constituting one of fourteen equal parts into which anything may be derived.

(4):

(a.) Next in order after the thirteenth; as, the fourteenth day of the month.