from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To blunt; to turn, as an edge.
- v. To cause to be obtuse or dull.
from the GNU version of the Collaborative International Dictionary of English
- transitive v. To blunt; to turn, as an edge; figuratively, to cause to be obtuse or dull.
from The Century Dictionary and Cyclopedia
- To blunt or turn, as the edge of a weapon; dull.
Latin retundere, retusum; prefix re- re- + tundere to beat. (Wiktionary)