Verb
The word is derived from overtop
of Overtop
Source: Webster's dictionaryA fuse plug spillway is a low embankment designed to be overtopped and washed away in the event of a large flood. Source: Internet
The Bishop tuff is thousands of feet thick and is cut by the Owens River Gorge, formed during the Pleistocene when the caldera filled with water and overtopped its rim. Source: Internet
These dams can be overtopped at high tide and hold water at low tide. Source: Internet