Definitions for juneteenthˈdʒunˈtinθ
Random House Webster's College Dictionary
June 19, celebrated by African-Americans as the anniversary of the emancipation of slaves in Texas on June 19, 1865.
Origin of Juneteenth:
1935–40; b. june+nineteenth
A holiday celebrated in a number of U.S. states on June nineteenth, commemorating the end of slavery in the U.S.