水平

(1) 平行線または基線に対して平行または同じ面に属して(parallel to or in the plane of the horizon or a base line; "a horizontal surface")(parallel to or in the plane of the horizon or a base line)

⇒水平面(parallel to or in the plane of the horizon or a base line)

(2) 錘に直角に方向づけられる(oriented at right angles to the plumb; "the picture is level")(oriented at right angles to the plumb)

⇒絵は水平である(oriented at right angles to the plumb)

(3) 正確な水平面にある(being on a precise horizontal plane; "a billiard table must be level")(being on a precise horizontal plane)

⇒玉突き台は水平でなければならない(being on a precise horizontal plane)

(4) 例えば、形またはテクスチャーのように変化を伴わず水平である、直線であるあるいは規則的であるさま同じ同一平面、または、何か他のものと同じ高さであること（すなわち、同等）(being level or straight or regular and without variation as e.g. in shape or texture; or being in the same plane or at the same height as something else (i.e. even with); "an even application of varnish"; "an even floor"; "the road was not very even"; "the picture is even with the window")(being level or straight or regular and without variation as e.g. in shape or texture)(or being in the same plane or at the same height as something else (i.e. even with))

⇒絵は窓と並行である(or being in the same plane or at the same height as something else (i.e. even with))

(5) 水平である水平面(horizontally level; "a flat roof")(horizontally level)

⇒平屋根(horizontally level)