plural nines
1
: the number 9
2
: the ninth in a set or series
The next card was the nine of diamonds.
She wears a size nine.
3
: nine o'clock
"What time is it?" "It's nine."
He woke up at nine this morning.
a nine-to-five job [=a job that you work during regular business hours usually in an office]
4
: the first or last nine holes of an 18-hole golf course
—usually singular
She didn't play well on the front nine [=on holes 1 through 9], but she was one under par on the back nine. [=on holes 10 through 18]
Cite this Entry
“Nine.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/nine. Accessed 23 Jun. 2026.
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