blowdart

The story

1. Proto-Indo-European*bʰel-
2. Proto-Indo-European*bʰleh₁-
3. Proto-Germanic*blēaną
4. Proto-West Germanic*blāan
5. Old Englishblāwan
6. Middle Englishblowen
7. Englishblow
8. Proto-Indo-European*dʰerh₃-
9. Proto-Indo-European*dʰórh₃-eh₂
10. Proto-Germanic*darō
11. Proto-Germanic*darōþuz
12. Frankish*darōþ
13. Medieval Latindardus
14. Old Frenchdart
15. Middle Englishdart
16. Englishdart
17. English todayblowdart

From blow + dart.