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1 definition by Launchd

 
1.
Tumblelogs are miniblogs — a fast way to share links, photos, and videos without the bells and whistles of a regular blog.

Unlike blogs, tumblelogs are frequently used to share the author's creations, discoveries, or experiences while providing little or no commentary.
If blogs are journals, tumblr is a scrapbook.
by Launchd June 09, 2008