Meaning of upswing

up•swing

Pronunciation: (n.up'swing"v.up&sylpswing'), [key]
— n., v., -swung, -swing•ing.
—n.
  1. an upward swing or swinging movement, as of a pendulum.
  2. a marked increase or improvement: an upswing in stock prices.
—v.i.
  1. to make or undergo an upswing.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.