A mesa is a flat-topped hill most commonly found in the Southwest part of the U.S.. Its sides are steep all around so that it looks like a massive table.

Mesa comes from the Latin mensa meaning "table," which is very much what a mesa looks like. A mesa is formed when the weaker horizontal rocks around a big formation start to erode and fall away, leaving stronger rocks standing in a flat-topped hill. Grand Mesa in Western Colorado is the largest mesa in the world, with an area of 500 square miles. That's bigger than all of Hong Kong!

Definitions of mesa

n flat tableland with steep edges

“the tribe was relatively safe on the mesa but they had to descend into the valley for water”
Type of:
plateau, tableland
a relatively flat highland

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