British spelling of defecate; to eliminate feces from the body; to remove impurities or unwanted matter.
From Latin defaecate: de- (away, out) + faeces (dregs, sediment). Originally used in chemistry to describe removing impurities before acquiring medical/biological sense.
Defaecate comes from the Latin word for 'dregs,' which is much more poetic than the English slang terms we actually use for this very natural biological process.
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