Pretty much any quilting related acronym's definition can be found by doing a Google search.
(I'm excluding the cutesy DD, DH, etc. familial ones.)
Just add the word "quilt" to it.
For instance, you can see the difference between the results you would get for a search on "OBW" vs. "OBW quilt."
Obviously, you're not looking for Original Buffalo Wings or the Ohio Business Weekly. ;-)
"hst" alone will bring up links to info on the Hubble Space Telescope. ;-)
But "hst quilt" will target right in on the appropriate description.
The answer is usually right on the first results page, and you rarely ever need to click through for further information.