ruttle

The story

1. Proto-West Germanic · derived from*hroþ“saliva, mucus, snot”
2. Old Saxon · derived fromhrot
3. Middle Low German · derived fromrōtelen
4. Middle Dutch · derived fromrotelen“to rattle, wheeze, drone”
5. Middle English · inherited fromrotelen
6. English todayruttle

From Middle English rotelen, ratelen (“to make a rattling sound while breathing, flap”), from Middle Dutch rotelen (“to rattle, wheeze, drone”) or Middle Low German rōtelen, rātelen, rūtelen (“to groan, gasp, rattle”), from Old Saxon hrot, hrod (“snot, mucus”), from Proto-West Germanic *hroþ (“saliva, mucus, snot”), probably ultimately of imitative origin. Cognate with Dutch reutelen (“to rattle”), German Rotz (“snot”).