バイコーンMeanings1nounbicorn (mythical creature)A mythical creature with two horns, often contrasted with the unicorn. The term is a loanword from English 'bicorn'.See also: ウニコールバイコーンは、二に本ほんの角つのを持もつ伝でん説せつの生いき物ものです。The bicorn is a legendary creature with two horns.