stopcock

• POS: Noun
• HYPHEN: stop=cock

CIDE DICTIONARY

stopcock, n. 

•  A bib, faucet, or short pipe, fitted with a turning stopper or plug for permitting or restraining the flow of a liquid or gas; a cock or valve for checking or regulating the flow of water, gas, etc., through or from a pipe, etc.  [1913 Webster]
•  The turning plug, stopper, or spigot of a faucet.  [1913 Webster]

OXFORD DICTIONARY

stopcock, n. an externally operated valve regulating the flow of a liquid or gas through a pipe etc.

ROGET THESAURUS

stopcock

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.