summit

n. highest point, pinnacle, peak; greatest success, highest aspiration, highest level that can be reached; most important and influential government officials

Summit may refer to:LocationsSummit, New JerseyThe Summit (Houston), now known as the Compaq CenterAn alternate name for Hope, Providence, Rhode Island
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n. summit

(n.)
The top; the highest point.
  

(n.)
The most elevated part of a bivalve shell, or the part in which the hinge is situated.
  

(n.)
The highest degree; the utmost elevation; the acme; as, the summit of human fame.
  

In an EU context, this usually refers to the regular meetings or European Councils between the leaders of the 15 EU Member States. There are at least four such summits each year.