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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.
Cracked lips are a symptom in which the lips are dry, peeling or chapped. Breaks may appear on the surface, and the lips may become painful and may bleed. In most cases, cracked lips are not caused by a serious condition and do not pose any health risks. Common causes of cracked lips include dry or cold weather, sunburn, wind exposure, licking your lips, and breathing through your mouth. In some cases, mild conditions such as the common cold, dehydration, and nutritional deficiencies may also result in cracked lips.