Noun
1. the choicest or most essential or most vital part of some idea or experience;
"the gist of the prosecutor's argument""the heart and soul of the Republican Party""the nub of the story"2. any substance possessing to a high degree the predominant properties of a plant or drug or other natural product from which it is extracted
3. the central meaning or theme of a speech or literary work
4. a toiletry that emits and diffuses a fragrant odor