The philtrum is an opening in the lower part of the human body - it resembles a gutter-shaped gap above and below where the philtrum is. The word “groove” itself has two meanings - one of them is associated with this feature of the little men, and the second means a narrow groove. Grooves are a fairly common phenomenon in nature. For example, water flows through grooves - they can also be found on stones, on mollusk shells and even on the leaves of some plants. They act as a kind of channel connecting holes in different objects. In humans, the area under the nose is called the bailer. Its structure is different in that the cartilaginous roller and the fatty body of the tip of the nose form a groove. It continues in