Used in place of "double-u double-u double-u" before the "dot com" of a website address in spoken conversation. Who has time to spell out that tongue twister anyway?
"Oh, go check out the latest slang at tri-dub urban dictionary dot com."
an alternate way of phrasing the beginning of a Universal Resource Locator aka URL, web address beginning with "www." Instead of "doubleyou, doubleyou, doubleyou", tri-dub abbreviates the same thing.
The name of this website is h t t p, colon, forward slash forward slash, tri-dub, urban dictionary dot com.
I'm tired of saying "www." and while most peopledon't say that anymore, some websites require that you either include "www" or leave it off in order to be directed to the proper site. Hence the term tri dubs, or triple W's