apse

/รฆps/

IPA: /AE1 P S/

noun
  1. 1

    A semicircular projection from a building, especially the rounded east end of a church that contains the altar.

  2. 2

    The bishop's seat or throne in ancient churches.

  3. 3

    A reliquary, or case in which the relics of saints were kept.

  4. 4

    The nearest and furthest points to the centre of gravitational attraction for a body in orbit. More usually called an apsis.

noun
  1. 1

    An aspen tree.

Source: https://en.wiktionary.org/wiki/apse