# polysleeve

> English word · Noun

## Definitions
1. A clear plastic sleeve, usually closed on two or three sides, often used to contain CDs, trading cards, first day covers and other collectables.

## Etymology
From poly- + sleeve (“protective jacket or case”).

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/polysleeve