keystone state

Noun keystone state has 1 sense

• keystone state(n = noun.location) pa, pennsylvania - a Mid-Atlantic state; one of the original 13 colonies;
has parts: penn, pennsylvania, university of pennsylvania, allentown, altoona, bethlehem, erie, gettysburg, capital of pennsylvania, harrisburg, chester, city of brotherly love, philadelphia, pittsburgh, alleghenies, allegheny mountains, allegheny, allegheny river, blue ridge, blue ridge mountains, lehigh river, monongahela, monongahela river, susquehanna, susquehanna river
is a kind of american state
is a part of america, the states, u.s., u.s.a., united states, united states of america, us, usa, mid-atlantic states