libido

noun3

1. •
   Sexual urges or drives.

   • Good grief man, control your libido!
2. •
   Drives or mental energies related to or based on sexual instincts but not necessarily sexual in and of themselves.

   • For Freudians, libido means the desire to "unite and bind" with objects in the world.
   • The ego as an organ which seeks to synthesize thoughts in the psyche is said to be driven by libido or eros.
3. •
   Synonym of albedo in terms of a planet's, such as that of Mars, average surface spectral reflectivity.