What is "promontories"

Promontory \Prom"on*to*ry\, n.; pl. Promontories. [ L. promonturium, promunturium; pro before + mons, montis, mountain: cf. F. promontoire. See Mount, n.]

1. (Phys. Geog.) A high point of land or rock projecting into the sea beyond the line of coast; a headland; a high cape.

   Like one that stands upon a promontory.
   --Shak.

2. (Anat.) A projecting part. Especially:

   1. The projecting angle of the ventral side of the sacrum where it joins the last lumbar vertebra.

   2. A prominence on the inner wall of the tympanum of the ear.

n. (plural of promontory English)