Definition of siesta noun from the Oxford Advanced Learner's Dictionary

 

siesta

 noun
noun
BrE BrE//siˈestə//
 
; NAmE NAmE//siˈestə//
 
 
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a rest or sleep taken in the early afternoon, especially in hot countries to have/take a siesta I went upstairs for my afternoon siesta. Lots of people were taking a short siesta in the shade. compare nap Word Origin mid 17th cent.: Spanish, from Latin sexta (hora) ‘sixth hour’.
See the Oxford Advanced American Dictionary entry: siesta