nine
n. A1 Beginner Oxford US //ˈnaɪn// UK //nˈaɪn// nine
n. the number that comes after eight and before ten. You use it to count things or tell the time.
n. the cardinal number equivalent to the sum of eight and one. It functions as a determiner when preceding a noun or as a noun when referring to the digit itself.
I have nine apples in my basket.
The meeting starts at nine o'clock sharp, so please ensure you arrive a few minutes early.
The system architecture relies on a nine-layer security protocol designed to prevent unauthorized access at every stage of the data transfer process.
Usage
Functions as a determiner before a noun or as a noun when referring to the digit or a set of nine items.