"a beating, flogging," c. 1400, verbal noun from lash (v.1).
Entries linking to lashing
lash v.1
c. 1300, "to deal a blow;" later "to strike with a whip, beat with a lash" (late 14c.), possibly imitative. To lash out "to strike out violently" (originally of horses) is from 1560s and preserves the older sense. Related: Lashed; lashing.