<p><strong>Noun</strong></p><ul><li>a person or thing that loops something or forms loops.</li><li>the larva of any geometrid moth, such as the hemlock looper; inchworm.</li><li>cabbage looper.</li><li>a hook-shaped mechanism in a sewing machine that enables stitching by drawing the upper and lower threads together.</li><li>baseball blooper.</li><li>He was robbed of an RBI looper by the speediest shortstop in the league.</li></ul>