1. a device with a rubber printing surface that becomes coated with ink by being pressed on an ink-saturated pad, used for imprinting dates, addresses, standard designations or notices, etc., by hand.
2. a person or government agency that gives approval automatically or routinely.
3. such approval.
Pronunciation: (rub'ur-stamp'),[key] —v.t. 1. to imprint with a rubber stamp.
2. to give approval automatically or without consideration: to rubber-stamp the president's proposals.
—adj. tending to give approval automatically or without due consideration: a rubber-stamp Congress that passed all the president's bills.