drill down

drill down (to something)

to bore downward to something or some distance. We drilled down to a layer of waterbearing sand, hoping to make a well. They had to drill down to bedrock to make a base for the piers that hold the building up.

Common Names:

Name	Pronounced	Usage
Afra	['æfrə]
Rafinha	-	Portuguese
Chernobog	-	Slavic Mythology
Huguo	-	Ancient Germanic
Laurel	['lɔrəl]
Henry	['henri:]