Available Definitions:
1) n. - The state of being complex; complexity.
2) n. - A combination; a complex.
3) n. - The bodily constitution; the temperament; habitude, or natural disposition; character; nature.
4) n. - The color or hue of the skin, esp. of the face.
5) n. - The general appearance or aspect; as, the complexion of the sky; the complexion of the news.