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Definition of cos 1 conjunction from the Oxford Advanced Learner's Dictionary

cos1

conjunction
 
/kəz/,
 
/kɒz/
 
/kəz/
(also ’cos, ’cause)
(British English)
(also coz (British and North American English))
(informal)
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  1. because
    • I can't see her at all, cos it's too dark.
    Topics Change, cause and effectc2
previously
adverb
 
 
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