Sum"mit (?), n. [F. sommet, dim. of OF. som, sum, top, from L. summum, from summus highest. See Sum, n.]
1.
The top; the highest point.
Fixed on the summit of the highest mount.
Shak.
2.
The highest degree; the utmost elevation; the acme; as, the summit of human fame.
3. Zool.
The most elevated part of a bivalve shell, or the part in which the hinge is situated.
Summit level, the highest level of a canal, a railroad, or the like, in surmounting an ascent.
© Webster 1913.