noun, noun, used as a suffix
without; leaving out; omitting
Used as a noun or suffix meaning something is done without the specified thing. Common in phrases like ～抜きで (without ~) or ～は抜きにして (leaving ~ aside).
今日の会議は彼抜きで進めましょう。
Let's proceed with today's meeting without him.
冗談は抜きにして、本題に入ろう。
Joking aside, let's get down to business.
suffix
Suffix used after a number of people to indicate beating or defeating them one after another. Often seen in competitive contexts like sports or games.
彼は5人抜きを達成した。
He achieved a five-in-a-row victory.
将棋で3人抜きした。
I beat three opponents in a row at shogi.
抜き is the noun/suffix form derived from the verb 抜く (to pull out, omit). 抜き focuses on the state of omission or the act of surpassing in succession, while 抜く is the action itself.
Derived from the verb 抜く (ぬく, 'to pull out, omit') as its continuative form, functioning as a noun or suffix.