ˈslab-stone Also slabstone. [slab n.1] A stone having the form of a slab. 1851Sternberg Northampt. Dial., Slab-stones, broad and thin stones.1891N. & Q. 3 Jan. 8 A slabstone was discovered in the Court aisle.1897Chetwynd-Stapylton Stapeltons of Yorks. 191 Torre also saw four monumental slabstones.