Definition of ichneumon
1 : a mongoose (Herpestes ichneumon) of Africa, southern Europe, and southwestern Asia
2 : ichneumon wasp
Origin and Etymology of ichneumon
Middle English, from Latin, from Greek ichneumōn, literally, tracker, from ichneuein to track, from ichnos footprint
First Known Use: 15th century
Seen and Heard
What made you want to look up ichneumon? Please tell us where you read or heard it (including the quote, if possible).