What is another word for "valve"?

Roget's Thesaurus (1911) lists these synonyms for "valve": avoid, avoidance, avolation, away, bacon, beadle, belle, bird, break, bung, call, cerberus, clear, close, collar, come, coop, cork, cover, creep, deliverance, disappear, doorkeeper, dossil, drawbridge, effect, elopement, elude, escape, evasion, find, fire, fled, flight, flown, from, fugitive, get, give, good.