1. half circles; curved lines or shapes that form exactly half of a complete circle
Usage: plural of semicircle

Examples

• The students drew semicircles on their geometry worksheets.
• The rainbow formed two beautiful semicircles in the sky.
• The architect designed windows with semicircles at the top.
• She arranged the chairs in semicircles around the stage.
• The garden path curved in gentle semicircles through the flowers.
• The math teacher explained how to calculate the area of semicircles.