The term 'Mouth Feature' can be broken down into two crossword solutions: LIP (3 letters) and DELTA (5 letters). The lips are the two fleshy folds that form the opening of the mouth. They are composed of soft tissue and contain numerous nerve endings, making them sensitive to touch. The DELTA is a triangular area of the face located between the corners of the mouth and the nose. It is an important facial feature as it helps to define the shape of the mouth and the overall facial expression.