# polyfill

> English word · Noun

## Definitions
1. A synthetic textile used for bulk or insulation, e.g., in stuffed animals or coats.

## Etymology
Blend of polyester + fill.

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