black haw

noun

1

: a shrub (Viburnum prunifolium) bearing cymes of white flowers and bluish black drupes

2

a

: southern buckthorn

b

: false buckthorn

3

: either of two trees (Bumelia tenax and B. lanuginosa) of the southern U.S.

4

or less commonly black hawthorn : a hawthorn (Crataegus douglasii) of the western U.S.

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