canyon /ˈkænjən/noun 1verb 1forms 3 noun1 •a deep valley with high rock walls, cut through the land by a riverSnow filled her mouth. She caromed off things she never saw, tumbling through a cluttered canyon like a steel marble falling through pins in a pachinko machine. — 2012 verb1 •Of water, liquid, or another substance, to flow in or into a canyon. formscanyoned · canyoning · canyons