Synonyms and related words :
bar, bind, block, block up, blockade, bung, caulk, check valve, chink, choke, choke off, choke up, clog, clog up, cock, congest, constipate, cork, cover, dam, dam up, faucet, fill, fill up, foul, jam, lid, obstipate, obstruct, pack, peg, pin, plug, plug up, sea cock, spigot, spike, spile, spill, stanch, stay, stench, stop, stop up, stopgap, stopper, stuff, stuff up, tap, valve