<p><strong>Adjective</strong></p><ul><li>turning or capable of turning around on an axis, as a wheel</li><li>taking place around an axis, as motion</li><li>having a part or parts that turn on an axis, as a machine</li></ul><p><strong>Noun</strong></p><ul><li>a rotary device or machine</li><li>Chiefly Northeastern U.S.: traffic circle</li><li>Also called rotary converter</li><li>Electricity: synchronous converter</li><li>(initial capital letter) Rotary Club</li></ul>