billen

Billen is the Dutch plural noun for the buttocks, the fleshy part of the human posterior that forms the rounded contour of the hips. The term is commonly used in everyday speech to refer to the buttocks or hindquarters.

Anatomy and function: In humans, the buttocks consist of the gluteal region, including the three gluteal muscles—the gluteus maximus, gluteus medius, and gluteus minimus—as well as subcutaneous fat and connective tissue. The gluteal muscles contribute to hip movement, thigh stabilization, and erect posture. They are involved in actions such as standing up, walking, running, and climbing.

Etymology and usage: The word billen derives from the Dutch singular bil, with billen as the standard plural form. The term is widely used in Dutch; in more formal or clinical contexts, terms such as gluteal region or gluteal muscles are used instead of billen.

See also: buttocks; gluteal region; gluteus maximus.