Red Money Packet Given as a Gift in China
This page is the CodyCross answer for the clue below from Physics, Group 1886, Puzzle 4 (Nonlinear Optics).
Question is: Red Money Packet Given as a Gift in China
and the answer is: ENVELOPE
Word Meaning:
ENVELOPE — A paper or cardboard wrapper used to enclose small, flat items, especially letters, for mailing.
Definitions from Wiktionary.