The noun CONTINENTAL DIVIDE has 1 sense: 1. the watershed of a continent (especially the watershed of North America formed by a series of mountain ridges extending from Alaska to Mexico). Familiarity information: CONTINENTAL DIVIDE used as a noun is very rare.Dictionary entry details.eronyms (parts of continental divide): Great Divide (that part of the continental divide formed by the Rocky Mountains in the United States). Domain region: North America (a continent (the third largest) in the western hemisphere connected to South America by the Isthmus of Panama).
Definition of lighthouse. 1  1 : a structure (such as a tower) with a powerful light that gives a continuous or intermittent signal to navigators. 2  2 : beacon 3.
All lighthouses have a beacon (light) at the top. The beacon is houses in a room with large windows all the war around called a lantern room that is topped with a domed roof called a cupola. A spiral staircase (or sometimes a ladder) provides a way to climb to the top of the tower. Most lighthouses also feature a few rooms near the top.