1. (a.) Bright; clear; unobscured; as, a serene sky.

2. (a.) Calm; placid; undisturbed; unruffled; as, a serene aspect; a serene soul.

3. (n.) Serenity; clearness; calmness.

4. (n.) Evening air; night chill.

5. (v. t.) To make serene.