backjoint

n. 石阶踏步背榫; 留槽待填

词形变化

backjoints 复数 backjoints

释义与例句

n.
  1. 1.

    A rebate or chase in masonry left to receive a permanent slab or other filling.

    古体 建筑

词源

From back + joint.

来源：wiktionary