1ninth 
/ˈnaɪnθ/ noun
plural ninths /ˈnaɪnθ/ noun 1 [singular] : the number nine in a series
▪ We'll be leaving on the ninth. [=the ninth day of the month] ▪ He hit a home run in the ninth. [=the ninth inning of a baseball game] 2 [count] : one of nine equal parts of something
▪ She owned one ninth of the company.
▪ We'll be leaving on the ninth. [=the ninth day of the month] ▪ He hit a home run in the ninth. [=the ninth inning of a baseball game]
▪ She owned one ninth of the company.
