Egyptol. [Gr. σπέος cave, grotto.] A cave temple or tomb, esp. one of some architectural importance.
1843. Sir G. Wilkinson, Mod. Egypt & Thebes, V. II. 56. She [Pasht] has always the head of a lioness, and the title, Lady of the excavation or Speos.
1888. C. D. Bell, Winter on Nile, xviii. 170. There is a large speos with four massive pillars.