To Steel

1. (transitive) To edge, cover, or point with steel.
2. (transitive) To harden or strengthen; to nerve or make obdurate; to fortify against.
3. (transitive, obsolete, of mirrors) To back with steel.
4. (transitive, medicine, obsolete) To treat a liquid with steel for medicinal purposes.
5. (transitive, dialectal) To press with a flat iron.
6. (transitive, uncommon) To cause to resemble steel in appearance.
7. (transitive) To steelify; to turn iron into steel.
8. (transitive) To electroplate an item, particularly an engraving plate, with a layer of iron.
9. (transitive) To sharpen with a honing steel.

Synonyms

• (harden): harden
• (strengthen): strengthen