__ Oxide, Aka Laughing Gas
This page is the CodyCross answer for the clue below from Paris, Group 252, Puzzle 3 (Wine and Cheese).
Question is: __ Oxide, Aka Laughing Gas
and the answer is: NITROUS
Word Meaning:
NITROUS — (now historical) Pertaining to or composed of nitre; having the properties of nitre, bitter.
Definitions from Wiktionary.