Dewlap Dewlap A dewlap is a longitudinal flap of skin that hangs beneath the lower jaw or neck of many vertebrates. While the term is usually used in this specific context, it can also be used to include other structures occurring in the same body area with a similar aspect, such as those caused by a double chin or the submandibular vocal sac of a frog. In a more general manner, the term refers to any pendulous mass of skin, such as a fold of loose skin on an elderly person's neck, or the wattle of a bird. Dewlaps can be
Neck knife Neck knife A neck knife is a knife worn on a cord hanging from a person's neck. It usually means a small fixed-blade knife which is carried by means of a cord, by which the knife sheath is suspended from around one's neck. They can either hang handle up ("mountain man style") or handle down. The knife may be hung from a loop of natural or synthetic cord, a length of braided paracord, a leather thong, or even a breakaway beaded or ball chain such as those utilized for military dog tags. The upside down carry knife stays in place