# pinaculum

> English word · Noun

## Definitions
1. A chitin plate on the skin of a caterpillar.

## Etymology
From ancient Greek πίναξ (plate) + Latin -ulum.

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