[grandfather clause] n (1900): a clause creating an exemption based on circumstances previously existing; esp: a provision in several southern state constitutions designed to enfranchise poor whites and disfranchise Negroes by waiving high voting requirements for descendants of men voting before 1867
GRANDFATHER CLAUSE
Meaning of GRANDFATHER CLAUSE in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012