Meaning of “unique” - Learner’s Dictionary

unique

adjective us uk /juːˈniːk/
The book is written in his own unique style.The island's unique conditions make it difficult for plants to grow there.The rain forest contains unique forms of wildlife.Each design is unique.The building has several unique features.
NOT THE SAME

B2 different from everyone and everything else:

Everyone's fingerprints are unique.
SPECIAL

B2 unusual and special:

a unique opportunity
be unique to sb/sth

to exist in only one place, or be connected with only one person or thing:

It's a method of education that is unique to this school.
uniquely adverb
uniqueness noun [ U ]

(Definition of “unique” from the Cambridge Learner’s Dictionary © Cambridge University Press)