Answer: ashler

AnswerCrossword Clue
ASHLERSquared stone: Var.
ashlera. squared building stone cut more or less true on all faces adjacent to those of other stones so as to permit very thin mortar joints b. such stones collectively c. masonry made of them
ashlershort stud between joists and sloping rafters, esp. near the eaves
ashlerto face with ashlars
ashlerto build with squared stones, also ASHLAR