philtrum

About 0.05 uses per million words.

Meaning

1. noun The shallow vertical groove running from the nasal septum to the center of the upper lip.
2. noun The junction between the two halves of an animal's upper lip or nose.

Similar words

jestrum columella infranasal depression septum piriform sinus labrum medusa piercing labium fraenulum septum ring

Often followed by

and of is press with in column are dimple