To overload or overtax.
A sterile stratum that lies above the stratum being investigated
The rock and subsoil that lies above a mineral deposit such as a coal seam.
To come or pass over; to spread over.
To surmount (a physical or abstract obstacle); to prevail over, to get the better of.
To prevail.
To win or prevail in some sort of battle, contest, etc.
To recover from (a difficulty), to get over
The burden or recurring theme in a song.
A surplus.