A curve or curved line; an archaic or technical term for a curved shape or path.
From Old French 'courbe,' from Latin 'curva' meaning 'curve' or 'bent.' Directly related to modern English 'curve.'
The French kept 'courbe' but English speakers simplified it to 'curve'—you can still see 'courbe' in French and it's exactly the same word with different spelling!
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