1. the berrylike fruit of either of two African shrubs, Synsepalum dulcificum or Thaumatococcus daniellii, that, when chewed, causes sour substances to taste sweet.
2. Also called serendipity berry . the similar fruit of an African shrub, Dioscoreophyllum cumminsii. Also called miracle berry, miraculous fruit .
[ 1885-90 ]