The Collaborative International Dictionary of English v.0.48:

Waxberry \Wax"ber`ry\, n. (Bot.)
   The wax-covered fruit of the wax myrtle, or bayberry. See
   Bayberry, and Candleberry tree.
   [1913 Webster]

WordNet (r) 3.0 (2006):

waxberry
    n 1: deciduous shrub of western North America having spikes of
         pink flowers followed by round white berries [syn:
         snowberry, common snowberry, waxberry,
         Symphoricarpos alba]
    2: deciduous aromatic shrub of eastern North America with grey-
       green wax-coated berries [syn: bayberry, candleberry,
       swamp candleberry, waxberry, Myrica pensylvanica]