What is "lip"?

The lip refers to the soft, movable, and fleshy part that surrounds the mouth opening. It plays a crucial role in various functions, including speech, eating, and expressing emotions. The lip is composed of delicate skin tissue, which is more sensitive and prone to chapping or cracking compared to other parts of the body. It contains a dense network of blood vessels, giving it a pinkish or reddish color. The lips are also an important aesthetic feature, often associated with attractiveness and beauty. Additionally, they are involved in non-verbal communication, such as smiling, kissing, and expressing emotions through different lip movements.