French curve

American  

Or french curve

noun

1. a flat drafting instrument, usually consisting of a sheet of clear plastic, the edges of which are cut into several scroll-like curves enabling a draftsperson to draw lines of varying curvature.

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French curve British  

noun

1. a thin plastic sheet with profiles of several curves, used by draughtsmen for drawing curves

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Etymology

Origin of French curve

First recorded in 1880–85

Example Sentences

And no wonder: It�s a mouth-watering touch, which, in combination with the French curve at the after end of the window on each side of the house, captures the fancy of the toughest boat owner.

From Time Magazine Archive