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hardtack

American  
[hahrd-tak] / ˈhɑrdˌtæk /

noun

  1. a hard, saltless biscuit, formerly much used aboard ships and for army rations.


hardtack British  
/ ˈhɑːdˌtæk /

noun

  1. Also called: pilot biscuit, ship's biscuit, sea biscuit. a kind of hard saltless biscuit, formerly eaten esp by sailors as a staple aboard ship

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of hardtack

First recorded in 1830–40; hard + tack 2


Explanation

Hardtack is an old-fashioned type of bread or cracker that sailors used to bring with them during long voyages. The taste and texture of hardtack wasn't popular, but it lasted a long time without spoiling. If you take a close look at the word hardtack, you'll have a clear sense of how sailors felt about having to eat it day after day. The hard part is accurate — it was so dry and tough that it was difficult to bite. Tack once meant "food," but in dialect it was specifically "bad food." Hardtack had many alternate names, including "soda crackers" and "sea biscuits," but also "dog biscuits" and "molar breakers."

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Vocabulary lists containing hardtack

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The Scottish writer would certainly have been surprised to see David Oyelowo playing Long John Silver, which is one of the six-part series’ better innovations, despite Mr. Oyelowo chewing the scenery like hardtack.

From The Wall Street Journal ● Oct. 9, 2026

Cramped inside vessels overladen with precious cargo, crewmembers subsisted on a miserable diet of hardtack, an unleavened bread, and salted meat and fish that routinely spoiled and left many gravely ill.

From Barron's ● Apr. 28, 2026

We lunched on the small amount of smoked fish and seaman’s hardtack we had bought at a souvenir shop and drank water.

From Washington Post ● Jan. 20, 2022

Wartime museums display the bland hardtack that sustained Civil War fighters, and the canned meats, breads and fruit of World War II, known as C rations.

From New York Times ● Jun. 8, 2021

All the younger children were able-bodied seamen who, presumably, ate hardtack and bunked before the mast.

From "Cheaper by the Dozen" by Frank B. Gilbreth Jr. and Ernestine Gilbreth Carey

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