Meaning of “lack” - Learner’s Dictionary

lack

noun us uk /læk/
her obvious lack of interestThe concert has been cancelled owing to lack of support.He was arrested despite the lack of evidence against him.His poor job performance is a reflection of his lack of training.There was a food shortage resulting from the lack of rainfall.
lack of sth

B1 not having something, or not having enough of something:

a lack of food/money
a lack of facilities for young people

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