SIESTA Meaning of SIESTA in English [ sɪ'ɛstə ]■ noun an afternoon rest or nap, especially one taken during the hottest hours of the day in a hot climate.OriginC17: Sp., from L. sexta (hora) 'sixth hour'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004