means A short nap taken in the early afternoon, especially after the midday meal, traditionally during the hottest part of the day.

from From Spanish siesta, descended from the Latin phrase hora sexta — 'the sixth hour' — counted from dawn, which landed right around midday. The Romans rested when the sun was cruelest, and the name for that sixth-hour pause survived the empire, softened through centuries of Spanish tongues into the cozy word we borrow today.