01 n. The top; the highest point.
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1.
The top; the highest point.“Fixed on the summit of the highest mount.” — Shak.
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2.
The highest degree; the utmost elevation; the acme; as, the summit of human fame.
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3.
The most elevated part of a bivalve shell, or the part in which the hinge is situated.(Zool.)
Phrases & compounds
Summit level —
the highest level of a canal, a railroad, or the like, in surmounting an ascent.