four corners rule
four-corners rule. 1. The principle that a document’s meaning is to be gathered from the entire document and not from its isolated parts. [Cases: Contracts 143.5; Evidence 448. C.J.S. Contracts § 314.] 2. The principle that no extraneous evidence should be used to interpret an unambiguous document. Cf. PAROL-EVIDENCE RULE. [Cases: Evidence 448. C.J.S. Evidence […]