This is the 657th most frequent Slovak word.
metrov
The Slovak word "metrov" means "meters" (genitive plural form of "meter").
In this sentence, 'metrov' describes the height of the fence, emphasizing measurement.
Postavili plot vysoký dva a pol metrov.
They built a fence two and a half meters high.
This usage of 'metrov' relates to specifying dimensions, in this case, the diameter.
Oblúk mosta má priemer desať metrov.
The arch of the bridge has a diameter of ten meters.
Here, 'metrov' is used as a plural form of 'meter', a unit of measurement, in the genitive case to indicate quantity.