ROGET THESAURUS
ramrod
Stopper
N
stopper, stopple, plug, cork, bung, spike, spill, stopcock, tap, rammer, ram,
ramrod, piston, stop-gap, wadding, stuffing, padding, stopping, dossil, pledget, tompion, tourniquet, cover, valve, vent peg, spigot, slide valve, janitor, doorkeeper, porter, warder, beadle, cerberus, ostiary.