Definition of "uni"

uni¹

/ˈjuː.ni/

noun
plural unis
1. (colloquial, chiefly Britain, Nigeria, Australia, New Zealand, Canada) University.

uni²

/ˈuː.niː/

noun
uncountable
1. Sea urchin eaten as sushi.
  Quotations
  The ikura popped in my mouth, the hotate was buttery soft and the uni was creamy and sweet without a seafood aftertaste, the kind of freshness I was hoping we would encounter when we left Tokyo.
  2013 July 16, Ken Belson, “In Japan, Searching for Prized Sea Urchins”, in The New York Times‎