1. a rectangular block of hewn stone used for building purposes;
The Collaborative International Dictionary of English v.0.48:
Ashlar \Ash"lar\, Ashler \Ash"ler\, n. [OE. ascheler, achiler,
OF. aiseler, fr. aiselle, dim. of ais plank, fr. L. axis,
assis, plank, axle. See Axle.]
(a) Hewn or squared stone; also, masonry made of squared
or hewn stone.
Rough ashlar, a block of freestone as brought
from the quarry. When hammer-dressed it is known
as common ashlar. --Knight.
(b) In the United States especially, a thin facing of
squared and dressed stone upon a wall of rubble or
[1913 Webster] Ashlaring
WordNet (r) 3.0 (2006):
n 1: a rectangular block of hewn stone used for building