1) written works (especially essays, poetry) valued because of the style or artistic quality and not the factual contents (belleslettres)

2) (the writing or the study of) books etc valued as works of art (i.e. novels, drama, essays, poetry, biography etc but not textbooks and journalism) (literature)

3) a silvery-white or bluish-white round deposit found inside the shells of some oysters, valued as a gem (pearl)

4) a kind of small bird, similar to a partridge, valued as food; to feel or show fear (quail)

5) (a store of) gold, silver, jewels etc; a highly valued object or person (treasure)