level line

American  

noun

1. contour line.

---

Etymology

Origin of level line

First recorded in 1660–70

Example Sentences

Thomas said all seats have an indicator: It might be a level line or a level bubble on the carrier itself or on the carrier base.

From Los Angeles Times • May 27, 2022

Place the top tile edge on the level line and press the tile into place, peeling off the remaining backing as you go.

From Washington Post • Mar. 14, 2022

I saw it as it came on a straight, level line from the east; a flash like a meteor of glistening white.

From Astounding Stories, June, 1931 by Various

It dipped, and it rose, and then it darted on a level line toward the south.

From The Guns of Europe by Altsheler, Joseph A. (Joseph Alexander)

And everywhere it seemed to be the same dead level line, with not a break that gave signs of promise.

From The Outdoor Chums on the Gulf by Allen, Quincy