An Etymological Dictionary of Astronomy and Astrophysics

11 Taste, especially the distinctive taste of something as it is experienced in the mouth. A particular quality noticeable in a thing (Dictionary.com).

2. Any of the six labels given to the distinct kinds of → quark: up, down, strange, charm, bottom, and top.
   

3. → neutrino flavor.

Etymology (EN): M.E., from O.Fr. flaor “smell, odor; action of smelling, sense of smell,” probably from V.L. flator “odor,” literally “that which blows,” in L. “blower,” from flareQ “to blow, puff,” which is cognate with O.E. blawan, → blow.

Etymology (PE): Câšni “taste; taste by way of a sample; quality,” related to
cašidan, caš- “to taste,” câšt “breakfast,” cašté “bait;”
Mid.Pers. câšt “meal,” câšnig “taste;” cf. Skt. cas- “to eat;” Proto-Ir. caš- “to eat, to drink; to drip.”