Underground __, Freedom Passage for the Enslaved

This page is the CodyCross answer for the clue below from Casino, Group 268, Puzzle 3 (Conrad Casino).

Question is: Underground __, Freedom Passage for the Enslaved

and the answer is: RAILROAD

Word Meaning:

RAILROAD — (chiefly US, Philippines) A permanent track consisting of fixed metal rails to drive trains or similar motorized vehicles on.

Definitions from Wiktionary.

Underground __, freedom passage for the enslaved — CodyCross Answer | CodyCross Solutions