Erection

noun

1. The act of building or putting up or together of something.
2. Anything erected or built.

   "The Empire State Building was once the world's tallest erection."

3. The physiological process by which erectile tissue, such as a penis or clitoris, becomes erect by being engorged with blood.
4. (of a penis or clitoris) The state or quality of being erect from engorgement with blood.
5. A penis or clitoris that is erect.

   "He placed his newspaper on his lap to hide his erection."