1. [noun] The quality of being oblique in direction, deviating from the horizontal or vertical; or the angle created by such a deviation. [from 15th c.]
2. [noun] Mental or moral deviation or perversity; immorality. [from 15th c.]
3. [noun] The quality of being obscure, oftentimes willfully, sometimes as an exercise in euphemism. [from 17th c.]
4. [noun] The presentation during labor of the head of the fetus at an abnormal angle.
5. [noun] The quality of being deceptive.
