Rawlb
Rawlb is a term that can refer to a few different things, primarily a type of fastener and, by extension, a type of tool used for installation. In construction and DIY contexts, a rawlplug, often shortened to rawl, is a type of wall plug or anchor. It is a plastic or nylon sleeve that is inserted into a pre-drilled hole in a wall. When a screw is then driven into the rawlplug, the sleeve expands, creating a secure anchor for the screw. This allows objects to be hung or attached to walls that might otherwise not be strong enough to support them, such as plasterboard or masonry.
The term "rawl" is also sometimes used to refer to the drill bit or masonry bit used