The Collaborative International Dictionary of English v.0.48:

Teaberry \Tea"ber`ry\, n. (Bot.)
   The checkerberry.
   [1913 Webster]

WordNet (r) 3.0 (2006):

teaberry
    n 1: creeping shrub of eastern North America having white bell-
         shaped flowers followed by spicy red berrylike fruit and
         shiny aromatic leaves that yield wintergreen oil [syn:
         teaberry, wintergreen, checkerberry, mountain tea,
         groundberry, ground-berry, creeping wintergreen,
         Gaultheria procumbens]
    2: spicy red berrylike fruit; source of wintergreen oil [syn:
       wintergreen, boxberry, checkerberry, teaberry,
       spiceberry]