Shine a Light on This Banknote Security Feature
This page is the CodyCross answer for the clue below from Ancient Egypt, Group 194, Puzzle 4 (Papyrus Scrolls).
Question is: Shine a Light on This Banknote Security Feature
and the answer is: WATERMARK
Word Meaning:
WATERMARK — A translucent design impressed on the surface of paper and visible when the paper is held to the light.
Definitions from Wiktionary.