There are 2 definitions of cnr in English:

cnr1

Line breaks: cnr

Entry from British & World English dictionary

abbreviation

Corner.

Definition of cnr in:

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Word of the day antebellum
Pronunciation: ˌantɪˈbɛləm
adjective
occurring or existing before a particular war…

There are 2 definitions of cnr in English:

CNR2

Syllabification: CNR

abbreviation

historical
Canadian National Railways.

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Word of the day antebellum
Pronunciation: ˌantɪˈbɛləm
adjective
occurring or existing before a particular war…