From The Collaborative International Dictionary of English v.0.48:

Wikiup \Wik"i*up`\, n. [Of North American Indian origin; cf.
   Dakota wakeya, wokeya.]
   The hut used by the nomadic Indian tribes of the arid regions
   of the west and southwest United States, typically elliptical
   in form, with a rough frame covered with reed mats or grass
   or brushwood.
   [Webster 1913 Suppl.]
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