Mrs. Robinson noun 1verb 1forms 3 noun1 •(informal) An older woman who seduces a younger man.It's no longer the frustrated, outrageous outlet of a "Mrs. Robinson" or the lonely line of the spring of "Mrs. Stone." — 1974 verb1 •(slang) Of a woman, to seduce a younger man. formsMrs. Robinsoned · Mrs. Robinsoning · Mrs. Robinsons