I. ˈsü-ər, ˈsu̇r noun
Etymology: Middle English, from Anglo-French asseour, literally, seater, from Anglo-French asseer to seat — more at assize
Date: 14th century
: a medieval household officer often of high rank in charge of serving the dishes at table and sometimes of seating and tasting
II. ˈsō-ər noun
Date: 14th century
: one that sews
III. ˈsü-ər, ˈsu̇r 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)