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adjective,
1. of the first or highest quality, class, or rank:
a classic piece of work.
2. serving as a standard, model, or guide:
the classic method of teaching arithmetic.
3. of or relating to Greek and Roman antiquity, especially with reference to literature and art.
4. modeled upon or imitating the style or thought of ancient Greece and Rome:
The 17th and 18th centuries were obsessed with classic ideals.
5. of or adhering to an established set of artistic or scientific standards or methods:
a classic example of mid-Victorian architecture.
6. basic; fundamental:
the classic rules of warfare.
7. of enduring interest, quality, or style:
a classic design; classic clothes.
noun
12. an author or a literary work of the first rank, especially one of demonstrably enduring quality.
13. an author or literary work of ancient Greece or Rome.
14. classics, the literature and languages of ancient Greece and Rome (often preceded by the).
15. an artist or artistic production considered a standard.
16. a work that is honored as definitive in its field:
His handbook on mushrooms is a classic.
17. something noteworthy of its kind and worth remembering:
His reply was a classic.
18. an article, as of clothing, unchanging in style:
Her suit was a simple classic.