Definition of "yt"

yt¹

adjective
1. (slang, African-American Vernacular, often derogatory) Alternative spelling of white (“Caucasian”)
  Quotations
  People of color aspire to be light skinned and yt people aspire to be tan. It is only aesthetically pleasing for yt people to be brown.
  2017 Spring, Tess Griffin, When life gives you lemons, bleach your skin, in Growl (Hofstra English Society & Campus Feminist Collective), issue 1
noun
1. (uncommon, slang, African-American Vernacular, derogatory, offensive) Alternative spelling of whitey

conjunction
1. (obsolete) Abbreviation of that.
  Quotations
  The King appear'd to be much hurt at this, told me he did not credit what he told him, as he knew yt. you & I had never had any dispute together, & yt. William & you had had some misunderstanding in Germany […]
  1791, George IV, “Carlton House, 24 July 1791”, in A. Aspinall, editor, The Correspondence of George, Prince of Wales, 1770–1812, volumes II: 1789–1794, London: Cassell, published 1964, page 177