in the SW U.S., a flat desert valley surrounded by mountains and draining into a shallow lake in the center
Origin of bolsonAmerican Spanish bolsón ; from Sp, literally , big purse ; from bolsa, purse ; from Medieval Latin bursa: see bourse
nounChiefly Southwestern US
A flat arid valley surrounded by mountains and draining into a shallow central lake.
Origin of bolsonAmerican Spanish bolsón, augmentative of Spanish bolsa, purse, pouch, from Late Latin bursa; see bursa.