"get Into the __, Boy You've Got to Prove..."
This page is the CodyCross answer for the clue below from Apothecary, Group 1979, Puzzle 5 (Medical Advice).
Question is: "get Into the __, Boy You've Got to Prove..."
and the answer is: GROOVE
Word Meaning:
GROOVE — A long, narrow channel or depression; e.g., such a slot cut into a hard material to provide a location for an engineering component, a tire groove, or a geological channel or depression.
Definitions from Wiktionary.