Definition of "weedless"

weedless

adjective
not comparable
1. Lacking weeds.
  Quotations
  Soon oranges were seedless,The putting green was weedless,The college boy hatless,The proper diet, fatless, […]
  1936, Arthur Guiterman, First Dentistry was Painless
  I remember the fresh weedless lawns between the school buildings […]
  1960, Rupert Croft-Cooke, The Altar in the Loft, page 210
2. (of a motorboat propeller) Having blades that curve backwards, as respects the direction of rotation, so that they draw through the water without accumulating weeds.