bolson

bolson

[bohl-sohn]
noun
a desert valley, the level of which has been raised by aggradation, usually draining into a playa.

Origin:
1830–40, Americanism; < Spanish: big purse, equivalent to bols(a) purse (< Late Latin bursa; see bursa) + -ón augmentative suffix

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World English Dictionary
bolson (bəʊlˈsəʊn)
 
n
(Southwestern US) a desert valley surrounded by mountains, with a shallow lake at the centre
 
[C19: from American Spanish bolsón, from Spanish bolsa purse, from Late Latin bursa bag; see purse]

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