Meaning of pound sign

pound' sign"

Pronunciation: [key]
  1. a symbol (£) for “pound” or “pounds” as a monetary unit of the United Kingdom.
  2. a symbol (#) for “pound” or “pounds” as a unit of weight or mass:Cf. 20# bond paper stock.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.