Leeloo Is the Missing Fifth Link
This page is the CodyCross answer for the clue below from Train Travel, Group 714, Puzzle 1 (Level Crossing).
Question is: Leeloo Is the Missing Fifth Link
and the answer is: ELEMENT
Word Meaning:
ELEMENT — One of the simplest or essential parts or principles of which anything consists, or upon which the constitution or fundamental powers of anything are based.
Definitions from Wiktionary.