tripus

noun3

1. •
   (rare, historical) A vessel (usually a pot or cauldron) resting on three legs, often given as an ornament, a prize, or as an offering at a shrine to a god or oracle; often specifically, that such vessel upon which the priestess sat to deliver her oracles at the shrine to Apollo at Delphi.
2. •
   The hindmost Weberian ossicle of the Weberian apparatus, touching the anterior wall of the swimbladder and connected by a dense, elongate ligament to the intercalarium.
3. •
   (no longer used, rare) A Bachelor of Arts appointed to make satirical strictures in humorous dispute with the candidates at a degree-awarding ceremony.