n.
Pronunciation: ' ash-l ə r
Function: noun
Etymology: Middle English asheler, from Anglo-French aiseler, from Old French, traverse beam, from aissele, diminutive of ais plank, from Latin axis, alteration of assis
Date: 14th century
1 : hewn or squared stone also : masonry of such stone
2 : a thin squared and dressed stone for facing a wall of rubble or brick