Definitions

1. noun

A type of rare or obsolete word, especially one that is considered difficult to pronounce or remember.

“The linguist was fascinated by the obscure term ‘bilipyrrhin’, which she had never come across in her academic career.”

2. adjective

Characterized by or relating to a difficult or unusual pronunciation.

“The professor used a bilipyrrhin word in his lecture, much to the amusement of his students.”