noun nine·pin \ˈnīn-ˌpin\

Definition of ninepin

  1. 1 ninepins plural in form but singular in construction :  a bowling game resembling tenpins played without the headpin or having the nine pins in a diamond-shaped configuration with one pin in the center

  2. 2 :  a pin used in ninepins

Circa 1580

First Known Use of ninepin

circa 1580

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