Frenulum
A frenulum (; from Latin frēnulum 'little bridle', the diminutive of frēnum; pl. frenula), also called a frenum (; pl. frena), is a small fold of tissue that secures the motion of a mobile organ in the body. == In human anatomy == Frenula on the human body include several in the mouth, some in the digestive tract, and some connected to the external genitalia.