erectile

1. Capable of being raised to an upright position.
2. Anatomy. Of or relating to tissue that is capable of filling with blood and becoming rigid.

1. Of or relating to tissue capable of filling with blood and becoming rigid.
2. Capable of being raised to an upright position.

Capable of erection.

• e. tissue — spongy tissue that expands and becomes firm when filled with blood, e.g. corpus cavernosum of the penis.

The adjective has 2 meanings:

Meaning #1: capable of being raised to an upright position

Meaning #2: (physiology) filled with vascular sinuses and capable of becoming distended and rigid as the result of being filled with blood
  Synonym: cavernous