rimless

noun

1. an edge, border, or margin, esp. of something circular; often, a raised or projecting edge or border
2. 1. the outer, circular part of a wheel
   2. the metal flange surrounding the wheel of an automotive vehicle, on which the tire is mounted
3. frame ()
4. Basketball the metal hoop to which the net is attached

transitive verb rimmed, rimming

1. to put or form a rim on or around
2. to roll around the rim of: the golf ball rimmed the hole