The Collaborative International Dictionary of English v.0.48:

Savin \Sav"in\, Savine \Sav"ine\, n. [OE. saveine, AS. safinae,
   savine, L. sabina herba. Cf. Sabine.] [Written also
   sabine.] (Bot.)
   (a) A coniferous shrub (Juniperus Sabina) of Western Asia,
       occasionally found also in the northern parts of the
       United States and in British America. It is a compact
       bush, with dark-colored foliage, and produces small
       berries having a glaucous bloom. Its bitter, acrid tops
       are sometimes used in medicine for gout, amenorrhoea,
       etc.
   (b) The North American red cedar (Juniperus Virginiana.)
       [1913 Webster]

WordNet (r) 3.0 (2006):

savin
    n 1: procumbent or spreading juniper [syn: dwarf juniper,
         savin, Juniperus sabina]