Doesn't Need an Envelope to Be Mailed
This page is the CodyCross answer for the clue below from Concert Hall, Group 584, Puzzle 3 (Claude Debussy).
Question is: Doesn't Need an Envelope to Be Mailed
and the answer is: POSTCARD
Word Meaning:
POSTCARD — (postal) A rectangular piece of thick paper or thin cardboard, typically used for sending messages by mail without the need for an envelope.
Definitions from Wiktionary.