back of one's hand noun2 •A slap."And have that boor D'Hérouville laugh? No! Let him give me the chance, and I will give him the back of my hand." — 1903 •(figurative) A display of disrespect or scorn."Out upon ye, Mr. Saddletree!" exclaimed David, . . . "out upon your General Assembly, and the back of my hand to your Court o' Session!" — 1818
