Meaning of sunblock

sun•block

Pronunciation: (sun'blok"), [key]
— n.
  1. a substance that provides a high degree of protection against sunburn, often preventing most tanning as well as burning, as by obstructing the penetration of ultraviolet rays.
  2. a lotion, cream, etc., containing such a substance.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
See also: