A dermatologist is a doctor who has extensive training and knowledge of the skin, scalp, hair and nails and treats conditions that affect those areas. These doctors will evaluate any abnormality, blemish or lesion on the skin in order to determine the cause and will determine a course of treatment.
Definition of rampart for English Language Learners. : a tall, thick stone or dirt wall that is built around a castle, town, etc., to protect it from attacks.
The height of ramparts varies according to differing terrains. On average, the wall measures 25.6 feet (7.8 meters) high, making it difficult for enemies to break through. Usually, those built in flat areas are higher than those on steep ridges, with the highest point reaching 46 feet (14 meters).