gnomon

英 ['nəʊmɒn] 美 ['noʊmɒn]

• n. 日晷仪；磬折形

英英释义

Noun:

1. indicator provided by the stationary arm whose shadow indicates the time on the sundial

例句

用作名词 (n.)

1. A stake used for this purpose was the earliest type of sundial and was called a gnomon.
   这种特定的标杆就是最早的一种日晷仪，人们称之为日晷仪标杆。