Breadcrumb Home > Thesaurus > H Synonyms of hardtack Find synonyms for: Noun 1. hardtack, pilot biscuit, pilot bread, sea biscuit, ship biscuit, biscuit usage: very hard unsalted biscuit or bread; a former ship's staple 2. hardtack, mahogany, mahogany tree usage: a mountain mahogany WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of hardtack (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: felicitous Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language