Definition of "cheesecake"

(countable and uncountable) A pie made of sweetened and flavoured cottage cheese or cream cheese, eggs and milk on a crunchy base.  examples

(countable and uncountable, obsolete) A pie made of cream, eggs and milk (somewhat resembling the modern American chess cake).

(uncountable) Imagery of scantily clad, sexually attractive young women; pin-ups.  examples