Resembling a laser

(UK, humorous euphemistic slang, dated) A lavatory: a room used for urination and defecation. / (Scotland, humorous euphemistic slang, uncommon) A urinal.

(mathematics) Formally, given two partially ordered sets A and B, the order ≤ on the Cartesian product A × B such that (a,b) ≤ (a′,b′) if and only if a < a′ or (a = a′ and b ≤ b′).

A surname. / A community near Buckley, Flintshire, Wales (OS grid ref SJ2964). / A town south of Auckland, New Zealand. / An unincorporated community in Sumner County, Kansas, United States.