# polypin

> English word · Noun

## Definitions
1. A plastic version of the kind of brewery cask called a pin (equal to half a firkin), popular in homebrewing and the off-trade (deliveries for home consumption).

## Etymology
From poly- + pin.

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