From an unused root meaning to hollow or curve; the back (as rounded (compare H1460 and H1479); by analogy the top or {rim} a {boss} a {vault}arch of {eye} {bulwarks} etc.: - {back} {body} {boss} eminent (higher) {place} [eye] {brows} {nave} ring.
From H1461; a log (as cut out); also well or cistern (as dug): - {beam} {ditch} pit.
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Matrix
Dan 7:6After this I beheld, and lo another, like a leopard, which had upon the backH1355 of it four wings of a fowl; the beast had also four heads; and dominion was given to it.