圆规 (yuán guī) — compass (for drawing circles and arcs)

Definition

Examples

• 他正在用圆规画一个圆。
  Tā zhèng zài yòng yuán guī huà yí gè yuán.
  He is drawing a circle with a compass.
• 我买了一支新圆规。
  Wǒ mǎi le yì zhī xīn yuán guī.
  I bought a new compass.
• 数学课上，老师让我们用圆规。
  Shù xué kè shàng, lǎo shī ràng wǒ men yòng yuán guī.
  In math class, the teacher had us use compasses.