Air level, a spirit level. See Spirit level (below). -- Box level, a
spirit level in which a glass-covered box is used instead of a tube. --
Carpenter's level, Mason's level, either the plumb level or a straight
bar of wood, in which is imbedded a small spirit level. -- Level of the
sea, the imaginary level from which heights and depths are calculated,
taken at a mean distance between high and low water. -- Line of levels,
a connected series of measurements, by means of a level, along a given
line, as of a railroad, to ascertain the profile of the ground. --
Plumb level, one in which a horizontal bar is placed in true position
by means of a plumb line, to which it is at right angles. -- Spirit
level, one in which the adjustment to the horizon is shown by the
position of a bubble in alcohol or ether contained in a nearly
horizontal glass tube, or a circular box with a glass cover. --
Surveyor's level, a telescope, with a spirit level attached, and with
suitable screws, etc., for accurate adjustment, the whole mounted on a
tripod, for use in leveling; -- called also leveling instrument. --
Water level, an instrument to show the level by means of the surface of
water in a trough, or in upright tubes connected by a pipe.
Lev"el (lv"l), a. 1. Even; flat; having no part higher than another;
having, or conforming to, the curvature which belongs to the
undisturbed liquid parts of the earth's surface; as, a level field;
level ground; the level surface of a pond or lake.
Ample spaces o'er the smooth And level pavement.
Milton.
2. Coinciding or parallel with the plane of the horizon; horizontal;
as, the telescope is now level.
3. Even with anything else; of the same height; on the same line or
plane; on the same footing; of equal importance; -- followed by with,
sometimes by to.
Young boys and girls Are level now with men; the odds is gone.
Shak.
Everything lies level to our wish.
Shak.