keystone 03/25/2017 GFX Definition of the Day
key·stone noun /ˈkēˌstōn/ a central stone at the summit of an arch, locking the whole together.
http://vd-dailydef.blogspot.com/2017/03/keystone-03252017-gfx-definition-of-day.htmlThis post first appeared on VoiceDictionary DailyDef & DailyGFXdef Definition, please read the originial post: here