noun a shell, used as a die. ·see props.
2. prop ·v that which sustains an incumbent weight; that on which anything rests or leans for support; a support; a stay; as, a prop for a building.
3. prop ·vt to support, or prevent from falling, by placing something under or against; as, to prop up a fence or an old building; (fig.) to sustain; to maintain; as, to prop a declining state.