ashlaring noun3 •The act of bedding ashlar in mortar. •Ashlar when in thin slabs and made to serve merely as a case to the body of the wall.they are also fluted on their under edges, and sunk on their upper sides, projecting about two inches, in general, beyond the ashlaring — 1849 •The short upright pieces between the floor beams and rafters in garrets. formsashlarings