noun

• (countable) A nap, especially an afternoon one taken during the hottest part of the day in some cultures.
  "One humid afternoon a visitor did arrive to disturb Rottcodd as he lay deeply hammocked, for his siesta was broken sharply by a rattling of the door handle […]"
• (attributive, sometimes offensive) Laid-back attitudes to work or laziness, especially by a Hispanic person.
  "Lest we think all of this is due to the proverbial inefficiency of the Latin American - 'siesta people' - we can see some of these signs, perhaps in a less dramatic way, in European societies and in the celebrated 'tigers' of South East Asia."

verb

• (intransitive) to take a siesta; to nap.