What is the meaning of Sloe?

The small, astringent, wild fruit of the blackthorn (Prunus spinosa).

The tree Prunus spinosa.

Any of various other plants of the genus Prunus, as a shrub or small tree, Prunus alleghaniensis, bearing dark-purple fruit.

a bunch of branches or small trees that one drags after one self (to haul hey, sweep away snow, or used as a break)

a lazy person, a good-for-nothing, a n'er-do-well

to drag

to be lazy

Source: wiktionary.org