tuck up verb7 •To pull the blankets or duvet up over (someone in bed); to put (someone) to bed. •To pull the blankets or duvet up over oneself in bed. •To push the fabric at the bottom of a garment into itself or under another garment (especially trousers, skirt, dress etc.) •To cheat, trick or scam (someone). •to bring one's legs and abdomen together while lying face-up on the floor; to perform a tuck-up •To protect one's face by covering it with the gloves •(slang, no longer used) To execute by hanging. formstucked up · tucking up · tucks up