- A straight line at 90 degrees to a surface - April & Prudence managed to appear upright - Sheer crazy under a clipper! - The sort of line that provides just the right angle - Exactly upright or vertical; pointing to the zenith;
at right angles to the plane of the horizon; extending in a right line
from any point toward the center of the earth. - At right angles to a given line or surface; as, the
line ad is perpendicular to the line bc. - A line at right angles to the plane of the horizon;
a vertical line or direction.
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Related crossword clues sheer crazy under a clipper