—n.
1 a mixture of snow and rain falling together.
2 hail or snow melting as it falls.
3 US a thin coating of ice.
—v.intr. (prec. by it as subject) sleet falls (it is sleeting; if it sleets).
Derivatives:
sleety adj.
Etymology: ME prob. f. OE: rel. to MLG sloten (pl.) hail, MHG sloz(e) f. Gmc
Useful english dictionary. 2012.