quadrilateral
Pronunciation:
/ˌkwɒd.ɹəˈlæt.əɹ.əl//ˌkwɒd.ɹəˈlæt.əɹ.əl/noun
Definitions
A polygon with four sides.
An area defended by four fortresses supporting each other.
Example: The Venetian quadrilateral comprised Mantua, Peschiera, Verona, and Legnano.
adjective
Definitions
Having four sides.