Also means
straight line
Usage Note
Rettilineo as a noun refers to a straight section of a road or racing circuit; il rettilineo finale is the home straight in athletics or motorsport. As an adjective it means 'rectilinear, straight'. The plural noun is rettilinei. It is the opposite of curva (bend, curve) in sporting and road contexts.
Examples
"La macchina accelera nel rettilineo finale."
Natural Translation
The car accelerates on the final straight.

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