promontory

Short definition from Wiktionary

Noun

1. 1
   A high point of land extending into a body of water, headland; cliff.
2. 2
   A projecting part of the body: A projection on the sacrum.
3. 3
   A projecting part of the body: A rounded elevation in the tympanum of the ear.

Proper noun

1. 1
   A location in Box Elder County, Utah, United States, where the first transcontinental railroad was completed in 1869, and the golden spike ceremony was held.