Clamp

优选词，正式主题词

1. Any of various instruments or appliances having parts brought together for holding or compressing something (Merriam-Webster dictionary). 2. A device designed to bind or constrict or to press two or more parts together so as to hold them firmly (Merriam-Webster dictionary). 3. a device made of wood or metal that is used to hold two things together tightly (Cambridge dictionary).