15-letter words containing a, w, y
- winter holidays — a period of rest from work or studies taken in winter
- wolf-rayet star — a very hot (35,000–100,000 K) and luminous star in the early stages of evolution, with broad emission lines in its spectrum.
- working holiday — trip combining vacation with job experience
- yellow goatfish — a schooling goatfish, Mulloidichthys martinicus, inhabiting the Atlantic Ocean from Florida to Panama.
- yellow lead ore — wulfenite.
- yellow mandarin — (in the Chinese Empire) a member of any of the nine ranks of public officials, each distinguished by a particular kind of button worn on the cap.