English noun: hardtack | |||
| 1. | hardtack (food) very hard unsalted biscuit or bread; a former ship's staple | ||
| Synonyms | pilot biscuit, pilot bread, sea biscuit, ship biscuit | ||
| Broader (hypernym) | biscuit | ||
| 2. | hardtack (substance) a mountain mahogany | ||
| Broader (hypernym) | mahogany, mahogany tree | ||