A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #

B&D
An acronym for bondage and discipline.

bacterial vaginosis
A vaginal infection caused by the bacterium Gardnerella vaginalis.

bag
Slang term for scrotum

balls
Slang term for testicles.

Barr body
An inactivated X chromosome that appears as a small, black dot in the cells of genetic females, distinguishing them from male cells.

Bartholin's glands
Two tiny ducts located on either side of the vaginal entrance. They secrete a small amount of fluid during sexual arousal, but their exact purpose is unclear.

basal body temperature (BBT) method
A method of fertility awareness that is based on a woman's morning body temperature.

behavior therapy
A school of therapy based on learning theory that focuses on observable behavior and not the unconscious.

benign prostatic hypertrophy (BPH)
Enlargement of the prostate gland. This is a very common condition in older men.

berdache
A term used in some cultures for a male who assumes female dress and gender role. In these cultures, these individuals are often thought to be a third gender and have special powers.

bestiality
Sexual contact with animals; also known as zoophilia.

birth canal
Another term for the vagina; often used when referring to labor and birth.

birth control
The regulation of conception, pregnancy, and/or birth.

bisexuality
A sexual orientation in which one feels attracted to both males and females.

blastocyst
A small mass of cells that results after several days of cell division by a fertilized egg.

blow job
Unusual slang term for fellatio (which usually does not involve "blow[ing].")

blue balls
Slang expression for pain in the groinal area due to prolonged vasocongestion.

body fluids
Blood, semen, vaginal secretions, urine, feces, saliva and/or tears.

bondage and discipline (B&D)
A sexual activity in which a person is bound while another engages in "discipline" activities, such as spanking and whipping.

boner
Slang term for erection.

boobs
Slang term for a woman’s breasts.

Braxton-Hicks contractions
Uterine contractions during the last trimester of pregnancy that are often mistaken for labor.

breech presentation
A birth position in which the infant's buttocks or feet appear first.

brothel
A house of prostitution. bulbourethral glands Another term for Cowper's glands.

bulimia
An eating disorder distinguished from anorexia by binge eating followed by purging in some manner.

butch
A lesbian who dresses and acts in a very "masculine" manner. Opposite of femme.

butt
Slang expression for buttocks.

butt fuck
Slang term for anal intercourse.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z #