n.
Pronunciation: ' sü- ə r, ' su ̇ r
Function: noun
Etymology: Middle English, from Anglo-French, from assewer, essiver to drain, from Vulgar Latin *exaquare, from Latin ex- + aqua water ― more at ISLAND
Date: 15th century
: an artificial usually subterranean conduit to carry off sewage and sometimes surface water (as from rainfall)