sublingual
Its called the Frenulum or AKA the Tongue Web.
The tongue
The "frenulum" of tongue or tongue web (also "lingual frenulum" or "frenulum linguæ")
Sublingual nitroglycerin
bit
Nitro glicerine
Sub-linguals
Absorption
I don't have a white ring under my tongue.
The lingual frenulum. This is the thin bit of skin (technically it is a fold of mucosa) which you can see when you lift up your tongue
It is called a tongue of a Chameleon
Absorption lines