What is "cramp iron"

Cramp iron \Cramp" i`ron\ (?`rn). See Cramp, n., 2.

n. 1 An iron bar, bent at right angles at each end, used to hold masonry together 2 An arrangement of iron wedges inserted into a cavity to lift heavy stones; a lewis

n. a strip of metal with ends bent at right angles; used to hold masonry together [syn: cramp]