semicircle
🇺🇸
/ˈsemisɜːrkl/
🇬🇧
/ˈsemisɜːkl/
A half of a circle, like the top or bottom half.
The teacher drew a semicircle on the blackboard to show us the shape.
A shape or arrangement that is like a semicircle.
The students sat in a semicircle around the teacher for the storytime session.