The privilege of sending letters or other mail matter, free of postage, or without charge; also, the sign, mark, or signature denoting that a letter or other mail matter is to go free of postage. Called also the
franking privilege.
Also: <ecol>franking privilege</ecol>
“I have said so much, that, if I had not a
frank, I must burn my letter and begin again.”
— Cowper.