A pump drill, also known as a bow drill, is a primitive tool used for drilling holes in various materials such as wood, bone, antler, and shell. Some synonyms for pump drill include hand drill, hand-powered drill, and hand-cranked drill. Other terms that can be used to describe similar tools include brace and bit, eggbeater drill, and push drill. These drills can be used for various purposes like woodworking, construction, jewelry making, dentistry, and archaeology. Despite the advancements in technology, pump drills and their synonyms remain valuable tools for those who appreciate their simplicity, convenience, and ability to drill precise holes with ease.