box canyon
noun
a canyon with steep side walls terminating headwards in a vertical cliff.
Origin of box canyon
An Americanism dating back to 1870–75
Words nearby box canyon
box beam,
box bed,
box bolt,
box calf,
box camera,
box canyon,
box chronometer,
box coat,
box column,
box cornice,
box cutter
British Dictionary definitions for box canyon
box canyon
noun
Western US
a canyon with vertical or almost vertical walls