English Dictionary

semicircle

noun

Half of a circle. / A surveyor's instrument for measuring angles; a graphometer. / (soccer) An arc whose center is the penalty spot, extending from the top of the penalty area.

The rainbow is a semicircle in the sky.

意味（1）

Half of a circle.

意味（2）

A surveyor's instrument for measuring angles; a graphometer.

意味（3）

(soccer) An arc whose center is the penalty spot, extending from the top of the penalty area.