1. turning around a central point or axis
2. having parts that rotate

1. a traffic circle where vehicles travel around a central island
Usage: chiefly British
2. a machine or device with rotating parts

Examples

• The rotary motion of the wheel generates electricity.
• She used a rotary phone to make the call.
• The rotary engine was known for its smooth operation.
• Take the second exit at the rotary.
• The rotary cutter made precise fabric cuts.
• Traffic flows counterclockwise around the rotary.
• The rotary drill bit cut through the metal easily.