Meaning of “writing” - Learner’s Dictionary

writing

noun [ U ] us uk /ˈraɪtɪŋ/
These changes can be seen in both speech and writing.You need to work at improving your writing.The students learn the skills of legal writing.The school stresses the importance of reading, writing and arithmetic.The pupils are sitting an exam designed to test writing skills.
SKILL

A1 the skill or activity of producing words on a surface:

Teachers focus on reading and writing in the first year.
WORDS

A2 words that have been written or printed:

The writing was too small to read.
STYLE

B1 the way that someone writes:

You've got very neat writing.
BOOKS

B2 the books, stories, articles, etc written by a particular person or group of people:

She's studying women's writing of the 1930s.
JOB
in writing

B2 An agreement that is in writing is official because it has been written and not only spoken:

Please confirm your reservation in writing.

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