Webster's Revised Unabridged Dictionary · 1913

Breadth

Breadth (bredth) , noun

[Old English brede, breede, whence later bredette, Anglo-Saxon bradu, from brād broad. See Broad, a.]

1.
Distance from side to side of any surface or thing; measure across, or at right angles to the length; width.
Breadth of coloring is a prominent character in the painting of all great masters. — Weale