from The American Heritage® Dictionary of the English Language, 4th Edition
- n. The period before something, such as a work of art, is available for sale to the public.
- n. An exclusive or private sale held before an advertised sale.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The sale of something privately, before it is available to the public
- n. The sale of a property before it is built
pre- + sale (Wiktionary)