hailstone

From Middle English hailston, haylestone, hawelston, hawleston, from Old English hagolstān (“hailstone”), from Proto-West Germanic *haglastain, from Proto-Germanic *haglastainaz, equivalent to hail +‎ stone. Cognate with West Frisian heilstien (“hailstone”), Saterland Frisian Hailsteen (“hailstone”), Dutch hagelsteen (“hailstone”), German Low German Hagelsteen (“hailstone”), German Hagelstein (“hailstone”), Swedish hagelsten (“hailstone”), Icelandic haglsteinn (“hailstone”).

hailstone (plural hailstones)

1. A single ball of hail, or solid precipitation

• antiholes, thiolanes