IPA: /ˈfrɛnəm/
KK: /ˈfrɛnəm/
A small fold of tissue that connects or supports a part of the body, like the tissue under the tongue that helps control its movement.
The frenum under my tongue helps me move it properly when I speak.
Frenum comes from Latin 'frenum' (meaning bridle or rein). It refers to a part of the body that serves to restrain or control, similar to how a bridle controls a horse.
Think of a 'bridle' ('frenum' in Latin) that helps to control or restrain something, which is why 'frenum' refers to a part of the body that serves a similar purpose.