A line with no curvature; a line with constant direction. The path of shortest length between two points. syn.(noun)
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Use "straight line" in a sentence
"It is the last stretch I cannot bear, when I come to the top of Kildare Street and have no choice but to walk in a straight line along Merrion Row and Baggot Street towards Pembroke Road."
"I plotted the figures on a logarithmic scale, chosen because an exponential trend will always show up as a straight line when plotted logarithmically."
"He made his way to the opposite side and then down a side-street, walking in a straight line until he came to a boardwalk with palm trees that looked over a beach and the sea."