| Answer | Crossword Clue |
|---|---|
| IRONWOOD | Very hard, heavy timber. |
| guaiacums | An evergreen tree of the Caribbean and tropical America, formerly important for its hard, heavy, oily timber but now scarce |
| IRONWOOD | Tree with very hard timber |
| ironwoods | Any of a number of trees that produce very hard timber, in particular |
| ironwood | Any of a number of trees that produce very hard timber, in particular |
| lignum | the very hard heavy wood of any of several tropical American guaiacums |
| iridiums | a rare silver-white hard brittle very heavy metallic element see element table |
