vi

Short definition from Wiktionary

Noun

1. 1
   Initialism of verb intransitive or intransitive verb, often in dictionaries.
2. 2
   Initialism of verb, intransitive.
3. 3
   Initialism of viscosity index.

Proper noun

1. 1
   Abbreviation of Virgin Islands.
2. 2
   VI (“U.S. Virgin Islands”)
3. 3
   Abbreviation of Victoria Imperatrix; the royal cypher of Queen Victoria of the United Kingdom, queen regnant and empress of the British Empire, Empire of India.
4. 4
   A diminutive of the female given names Violet and Viola.

Numeral

1. 1
   Ⅵ, the Roman numeral six (6).
2. 2
   A Roman numeral representing six (6).