black haw
nounDefinition of black haw
1
: a shrub (Viburnum prunifolium) bearing cymes of white flowers and bluish black drupes
2a
: 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.