411 REFERENCE · Wiktionary
Keystone State
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
right|thumb|The original 13 colonies showing Pennsylvania in its central keystone location
Etymology
An allusion to its central position connecting the original northern and southern thirteen states of the United States, at the time of formation of the Constitution.
Proper noun
Keystone State 1
en @official nickname for:Pennsylvania state c/USA.
Derived terms
en Keystone Stater