# hardtack

> English word · Noun

## Definitions
1. A large, hard biscuit made from unleavened flour and water; formerly used as a long-term staple food aboard ships.

## Etymology
From hard + tack.

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