English definition of “reference”
SAY [C, U] › when you briefly talk or write about someone or something: In his book, he makes several references to his time in France.
with/in reference to sth formal › relating to something: I am writing to you with reference to the job advertised in yesterday's newspaper.
LOOK AT [C, U] › when you look at information, or the thing that you look at for information: Please keep this handout for future reference (= to look at in the future).
LETTER [C] › a letter that is written by someone who knows you, to say if you are suitable for a job or course → See also cross reference