Meaning of “paper” - Learner’s Dictionary

paper

noun uk us /ˈpeɪpər/
MATERIAL [ U ]

A1 thin, flat material used for writing on, covering things in, etc:

a piece/sheet of paper
NEWSPAPER [ C ]

B1 a newspaper:

I buy a paper every morning.
EXAM [ C ] UK

A2 an examination:

Candidates must answer two questions from each paper.
WRITING [ C ]

a piece of writing about a particular subject written by someone who has been studying that subject:

She's just published a paper on language acquisition.
→ See also blotting paper , carbon paper , toilet paper , White Paper , wrapping paper

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