libido

The psychic and emotional energy associated with instinctual biological drives.

Sexual desire.

Manifestation of the sexual drive.

Sexual desire; the sexual instinct; the sex drive.

Those desires and instinctual energies which are derived from the id.

Sexual urges or drives.

Drives or mental energies related or based on sexual instincts but not necessarily sexual in and of themselves.

(psychoanalysis) a Freudian term for sexual urge or desire