B1[S or U]understanding of or information about a subject that you get by experience or study, either known by one person or by people generally: Her knowledge of English grammar is very extensive.He has a limited knowledge of French.The details of the scandal are now common knowledge (= familiar to most people).She started to photograph the documents, safe in the knowledge that(= knowing that) she wouldn't be disturbed for at least an hour.In this town there are only a couple of restaurants that to my knowledge (= judging from my personal experience and information) serve good food.Knowledge and awareness›[U]the state of knowing about or being familiar with something: The government deny all knowledge of the affair.It has come/been brought to our knowledge (= we have discovered)that several computers have gone missing.Knowledge and awareness