from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To thrust in up to the hilt; as, to uphilt one's sword into an enemy.
from the GNU version of the Collaborative International Dictionary of English
- transitive v. To thrust in up to the hilt.
from The Century Dictionary and Cyclopedia
- To plunge in up to the hilt.
From up- + hilt. (Wiktionary)