A sundial is a device used for telling the time when the sun is shining. The shadow of an upright rod falls onto a flat surface that is marked with the hours, and points to the correct hour.
英漢詞典釋義
n.
日晷, 日規
Churchyards often have sundials in them.教堂大院里通常設置日晷。
英英詞典釋義
Noun
1. timepiece that indicates the daylight hours by the shadow that the gnomon casts on a calibrated dial