drill into

drill in(to) (someone or something)

1. Literally, to bore into or pierce something. Unfortunately, we need to drill into the ground to try to find the burst pipe.
2. To teach something through repetition. In this usage, a noun or pronoun is used between "drill" and "in." When I was a kid, the times tables were simply drilled into us.
See also: drill
Farlex Dictionary of Idioms.

drill something into someone or something

 and drill something in
Fig. to force knowledge into someone or something Learn this stuff! Drill it into your brain. Drill in this information so you know it by heart!
See also: drill
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.

drill into

v.
1. To penetrate some surface by boring: The geologist drilled into the Earth's crust.
2. To teach or inculcate something to someone by constant, intense repetition: The teacher drilled the multiplication tables into the bored students. The teacher tried to drill into our heads the capital of every country.
See also: drill
The American Heritage® Dictionary of Phrasal Verbs.
See also:
  • a whack at (something)
  • a/the feel of (something)
  • (I) wouldn't (do something) if I were you
  • a straw will show which way the wind blows
  • a crack at (someone or something)
  • all right
  • (you) wanna make something of it?
  • all for the best
  • a thing of the past
  • a slew of (something)