Meanings
Synonyms & antonyms
nounSynonym of cake urchin.
Similar
nounSynonym of hardtack.
Similar
More synonyms by meaning
nounvery hard unsalted biscuit or bread; a former ship's staple
Broader
Synonym sets from Open English WordNet, CC BY 4.0.
Cite this entry
APA
sea biscuit. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/sea%20biscuit
MLA
“sea biscuit.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/sea%20biscuit. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “sea biscuit,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/sea%20biscuit.
Source: sea biscuit on Wiktionary, CC BY-SA 4.0.