n. A rod. See rod, 1.n. A cross or crucifix; especially, a large crucifix placed at the entrance to the choir in medieval churches, often supported on the rood-beam or rood-screen.n. A name of various measures.n. A square pole, or 30¼ square yards, used in estimating masons' work; also, locally, a measure of 36, 42¼, 44, 49, or 64 square yards.n. A cubic measure for masons' work of 64, 72, etc., cubic yards.n. Same as Holy-cross day (which see, under day).