WordWeb Online

1. Turned up on end

1. Become turned or set on end
   "the airplanes upended"
    
2. Set, turn, or stand on end
   "upend the box and empty the contents"

See also: perpendicular, upending, vertical

Type of: lay, overturn, place, pose, position, put, set, tip over, tump over, turn over

Encyclopedia: Upend