projection. The bumps of bone around your knees and elbows are almost all called condyles.
A meatus is an opening; therefor, it's a depression, not a projection.
condyle
condyle
condyle
Condyle
A condyle is a general term for a smooth round articular surface on a bone. An epicondyle is a projection above a condyle.
projection
projection
projection
projection
projection
....opening?