from The Century Dictionary.
- noun A sweeping upward: as, the up-sweep of a curve; the up-sweep of an arch.
Sorry, no etymologies found.
Pausing he glanced at the girl significantly, but she was gazing past him -- past Clendenning, her eyes upon the giant up-sweep of the hills.
The Gold Girl 1921
The coupe and sedan both have a similar up-sweep to the rocker panel crease that comes together with the sloping rear glass, short rear deck and slight downward slope at the rear end of the belt-line crease to produce a nice tight rear end.
Autoblog Green 2010
-- up-sweep from the direction of the wind, ending in a sharp, perfectly plane down-sweep on the south side; and the point of this three-sided but oblique pyramid would hang over like the flap of a tam.
Over Prairie Trails Frederick Philip Grove