(mining) A level or drainage gallery which has a vertical shaft at each end, and acts as an inverted siphon.

A spirit level in which a glass-covered box is used instead of a tube.

A connected series of measurements, by means of a level, along a given line, such as that of a railroad, to ascertain the profile of the ground.

plural of split-level

In a level-headed manner.

In technical analysis, a price level where the price tends to find support as it is going down, so it is more likely to "bounce" off this level rather than break through it. However, once the price has passed this level, by an amount exceeding some noise, it is likely to continue dropping until it finds another support level.

plural of support level

plural of Troughton level

plural of dumpy level

(surveying) A level having a short telescope, usually an inverting one, rigidly fixed to a table capable only of rotatory movement in a horizontal plane.