资料来源 : Webster's Revised Unabridged Dictionary (1913)

Sloe \Sloe\, n. [OE. slo, AS. sl[=a]; akin to D. slee, G.
   schlehe, OHG. sl$ha, Dan. slaaen, Sw. sl?n, perhaps
   originally, that which blunts the teeth, or sets them on edge
   (cf. {Slow}); cf. Lith. sliwa a plum, Russ. sliva.] (Bot.)
   A small, bitter, wild European plum, the fruit of the
   blackthorn ({Prunus spinosa}); also, the tree itself.

Blackthorn \Black"thorn`\, n. (Bot.)
      (a) A spreading thorny shrub or small tree ({Prunus
          spinosa}), with blackish bark, and bearing little
          black plums, which are called sloes; the sloe.
      (b) A species of {Crat[ae]gus} or hawthorn ({C.
          tomentosa}). Both are used for hedges.

资料来源 : WordNet®

Prunus spinosa
     n : a thorny Eurasian bush with plumlike fruits [syn: {blackthorn},
          {sloe}]