drill down

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drill down (third-person singular simple present drills down, present participle drilling down, simple past and past participle drilled down)

1. (idiomatic) to examine information at another level or in greater detail; especially in a database, to navigate to a more detailed level or record

   From the employee list, you can drill down to find addresses and pay history.

• get down to bedrock, get down to brass tacks

drill down (plural drill downs)

1. (of marching bands) an internal competition used to practice marching commands, in which the last person caught improperly executing a command wins

   We knew someone had lost when the last two people in the drill down ended up facing each other.