鑽

钻
zuān
  1. to drill
  2. to bore
  3. to get into
  4. to make one's way into
  5. to enter (a hole)
  6. to thread one's way through
  7. to study intensively
  8. to dig into
  9. to curry favor for personal gain

CEDICT

Homographs

鑚 zuàn variant of 鑽 zuàn
鑽 zuàn
  1. drill; auger
  2. diamond