To to support something in a big way.
She rallymsupports them in a big way; I mean biggly!
by Jack Mckenzie June 13, 2016
Basically a combination of the words big and jiggly pluralized to describe a set of big and jiggly titties. Similar to Tig Ol' Bitties, but not to be confused with Fakies.
God damn Earl, look at the Bigglies on that chick. If they're fake they got me fooled.
by EliteDanTheMan January 07, 2011
Something being described as very big
It was well biggly
by AmericanMotherland July 10, 2008