槷

* 木楔："直以指牙，牙得则无～而固。" * 测日影的标杆。 * 门中央竖立的短木："置旃以为辕门，以葛覆质以为～。" * 古同"臬"，箭靶子的中心

(translated) wooden wedge; gnomon; short wooden post in the center of a gate; anciently same as 臬, center of a target