NOUN (2)

1. (Roman mythology) goddess of the hearth and its fire whose flame was tended by vestal virgins; counterpart of Greek Hestia;

2. the brightest asteroid but the fourth to be discovered;

The Collaborative International Dictionary of English v.0.48:

Vesta \Ves"ta\ (v[e^]s"t[.a]), n. [L. Vesta, akin to Gr. "Esti`a
   Vesta, "esti`a the hearth of the house, and perhaps to Skr.
   ush to burn (see East), or perhaps to Skr. vas to dwell, and
   E. was.]
   1. (Rom. Myth.) One of the great divinities of the ancient
      Romans, identical with the Greek Hestia. She was a virgin,
      and the goddess of the hearth; hence, also, of the fire on
      it, and the family round it.
      [1913 Webster]

   2. (Astron.) An asteroid, or minor planet, discovered by
      Olbers in 1807.
      [1913 Webster]

   3. A wax friction match. --Simmonds.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Vesta
    n 1: (Roman mythology) goddess of the hearth and its fire whose
         flame was tended by vestal virgins; counterpart of Greek
         Hestia
    2: the brightest asteroid but the fourth to be discovered