Vána fem. name, a Valië, the wife of Oromë (Silm, WJ:383); the Etymologies gives Vana with no long vowel (BAN). The apparent meaning is *"beautiful (one)", since she was "the most perfectly beautiful in form and feature…representing the natural unmarred perfection of form in living things" (PE17:150).
Quenya
vána
feminine name. Ever-young, *(lit.) Beauty
Vána
beautiful (one)
tuilë
spring, spring-time
tuilë noun "spring, spring-time", also used = "dayspring, early morn" (VT39:7, TUY), in the calendar of Imladris a precisely defined period of 54 days, but also used without any exact definition. Cf. tuilérë, q.v. (Appendix D) - In early "Qenya", the word tuilë is glossed "Spring", but it is said that it literally refers to a "budding", also used collectively for "buds, new shoots, fresh green" (LT1:269). Cf. tuima in Tolkien's later Quenya.
tuilë
noun. spring, spring, [ᴹQ.] spring-time, [ᴱQ.] (lit.) a budding; buds, new shoots, fresh green
Valië of Spring and Happiness, spouse of Oromë, also called the “Ever-young” (S/29). Her name is a derivative of either √BAN “beauty” (PE17/150) or √WAN “fair” (WJ/383). She is the most perfectly beautiful being in form and feature, in the sense that she lacked any fault or blemish (PE17/150).
Conceptual Development: Her name was ᴱQ. Vána in the earliest Lost Tales (LT1/67), and this name appeared in the Qenya Lexicon as a derivative of the root ᴱ√VANA along with other words having to do with “beauty” (QL/99). In Silmarillion drafts from the 1930s, ᴹQ. Vana appeared with a short a (SM/79, LR/206), and it also appeared this way in The Etymologies as a derivative of √BAN, which was also the basis for words meaning “beautiful” (Ety/BAN).
The long á was restored in Silmarillion revisions from the 1950s-60s (MR/146). The derivation from the root √WAN did not appear until the Quendi and Eldar essay from 1959-60.