Wiktionary
multiplug
n. An electric device that allows more than one plug to connect to a single socket by containing multiple similar sockets; particularly for mains electricity.
Usage examples of "multiplug".
Beneath a litter of ruffled shirts, a shaving kit, and cans of hair spray, the trunk was packed to the gills with electronic contraband: coax cables, multiplexers, buffers and converters, shiny plug-in cards still in their heat-sealed baggies, multiplugged surge suppressors wrapped in tentacles of black extension cord.