plane
n. १ (as, a surface such that the straight line that joins any two of its points lies wholly in that surface; as, a two-dismensional extent of zero curvature) प्रतल (न.) २ (as, a level surface) समतल (न.) adj. १ (as, forming part of a plane) प्रतल- २ (as, flat, level) समतल-