(in touch typing) the row on a typewriter or computer keyboard that contains the keys (home keys) to which four fingers of each hand return as a base, on a QWERTY keyboard being A, S, D, and F for the left hand and J, K, L, and the semicolon for the right.
HOME ROW
Meaning of HOME ROW in English
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012