Confirmed by The Oxford English Dictionary.

Cf.: a rawlplug was a trade name for a wooden plug you bash into a hole you just drilled into cement, concrete or brick so you could then insert a screw to fasten something to the wall with. Later they developed the same things made out of plastic, with sprigs sticking out of them so they really stayed in place. After that came ones made of soft metal, like lead, for heavier loadings. None of these is to be confused with a moly bolt, which is designed to provide a fixing point on wallboard (plasterboard in the UK). It works in a clever way such that once you screwed in the screw, you deform the back of the moly so that it can't be pulled out of the hole. Ingenious gadgets.
http://english2american.com/dictionary/r.html

Przedmiot codziennego uzytku, a nigdy bym na to sam nie wpadl!