__ Drop; Steep Slide That Tests Your Nerves
This page is the CodyCross answer for the clue below from The Netherlands, Group 2108, Puzzle 1 (Cycling Culture).
Question is: __ Drop; Steep Slide That Tests Your Nerves
and the answer is: VERTICAL
Word Meaning:
VERTICAL — Standing, pointing, or moving straight up or down; parallel to the local direction of gravity; along the direction of a plumb line; perpendicular to something horizontal.
Definitions from Wiktionary.