Plugger

noun

1. One who or that which plugs; specifically, a dentists' instrument, of various forms, for driving and packing a filling material into a hole in a carious tooth. See dental hammer, under hammer.
2. One who, or that which, plugs.
3. One who, or that which, plugs.
4. A dental instrument used to insert fillings.
5. someone who is an active supporter and advocate