BT Er 55a(24) :פשיטא לא צריכא דמרבעא ולא מרבעא בריבועי עולם‏ : it is obvious! No. It is necessary where (the city) is squared but is not aligned with the cardinal points of the world
See the entire entry for pšīṭ adj. simple

BT Er 55a(24) :צריכא דמרבעא ולא מרבעא בריבועי עולם‏ : It is necessary where (the city) is squared but is not aligned with the world's cardinal points
See the entire entry for ribbūˁ, ribbūˁā v.n.D square