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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.
Labia is a Latin-derived term meaning lips. The labia majora, also known as the outer lips, are folds of skin on either side of the opening to the vagina and are covered with hair in most adult women. If you spread them open, you will find the labia minora or the inner lips.