Win

Shortening.

Win (plural Wins)

1. (colloquial) A Winchester firearm.
   • 1997 December 23, Marcus [username], “Re: New Pre '64 or 700 action?”, in rec.guns, Usenet‎:

     Pre-64 Win has a heritage that can't be beat. For me, it's Rems for prarie dogs and paper, Wins (or 1917 Enfields) for stuff that wants to stomp you into a greasy spot on the tundra.

Shortening.

Win

1. (computing) Windows, an operating system family developed by Microsoft.

Diminutives.

Win

1. A diminutive of the female given name Winifred.
2. A diminutive of the male given name Winston.
   • 1994, Robert B. Parker, All Our Yesterdays, Dell Publishing, →ISBN, page 449:

     Winston Piper didn't look right to her in what she thought of as Flaherty's office. […] “My friends call me Win,” he said. “No need for formality.” ¶ “Sure, Win.” He's hinting.

Borrowing from Burmese ဝင်း (wang:)

Win (plural Wins)

1. A surname​.

• According to the 2010 United States Census, Win is the 11209^th most common surname in the United States, belonging to 2820 individuals. Win is most common among Asian/Pacific Islander (88.01%) individuals.