christmasberry has definitions from the field of botany
1
[ noun ] (botany) spiny evergreen shrub of southeastern United States having spreading branches usually blue or mauve flowers and red berries

Related terms

shrub Lycium

2
[ noun ] (botany) ornamental evergreen treelike shrub of United States Pacific coast having large white flowers and red berrylike fruits; often placed in genus Photinia

Related terms

shrub Heteromeles

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