The two lines and the dent formed by them, under ones nose extending to the top of the upper lip.

Son of a Bitch!! That coffee just burned the shit out of my philtrum.
by Richard Kirshen October 28, 2003
Get the philtrum mug.
The word philtrum has 2 main meanings:
1: noun. The little groove between the bottom of your nose and your top lip. I have no clue what it is there for, but now you know what it is called.
2: verb. The art of performing oral sex while shaving. This originated because some kid at my school with a dirty mind thought it was 'full trim'. The term has since caught on and is now widely recognised.
1: You:"hi Steph! How you been?
Steph:"philtrum" *pokes your philtrum. walks away*

2: You:"hey sweety!"
Boyfriend:"her my giiiirl. Guess what I learnt today?"
You:"what?"
Boyfriend:"how to philtrum"
by *Angela lolly* February 20, 2013
Get the philtrum mug.
The act of giving Phil a haircut.
Hi, my name's Phil. My hair is so unusually long, so I decided to get myself a haircut. But I call it a "Philtrum."
by Scikoop75 December 27, 2021
Get the philtrum mug.
with 2 litres of vodka and a turbo-virgin duchbag here's where life can lead u to ( btw ur neighbour also may call the police cuz u went really hard )
duchbag: yoooooooo i coomd in my gf philtrum next im gonna coomd in ur philtrum

human : wtf
by minecraft sweat 6969696969 xx February 10, 2021
Get the coomd in ur philtrum mug.