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lip. ( 1 of an embryonic BLASTOPORE) the rim of the blastopore. ( 2 of a flower perianth) a group of perianth segments united to a greater or lesser extent, to form a distinct grouping thus divided from the rest of the perianth. ( 3 of vertebrates) one of two fleshy parts (upper and lower) surrounding the mouth.
Soft lines on lips are known as lip wrinkles or perioral wrinkles. Lip wrinkles and creases on or around the mouth find to be problematic or unattractive. Wrinkles on the lips and upper mouth area are often the first signs of aging on the face and can appear as early as the 20's.