Meaning of bounce light

bounce' light"

Pronunciation: [key]
— Photog. Photog.
  1. light that is bounced off a reflective surface onto the subject in order to achieve a softer lighting effect.
  2. any arrangement of a light source and reflective surface used to provide such light.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.