Where does “unbolt” come from?

unbolt (English) comes from English Bolt, from Middle English bolt, from Old English bolt, from Old English -tūn, from Old English tūn, from Proto-West Germanic tūn, from Proto-Germanic tūną, from Gaulish dunum — smoke; mist, haze.

unbolt (English): To unlock by undoing the bolts of

Definitions

  1. To unlock by undoing the bolts of

Ancestry of “unbolt”, step by step

StepLanguageWordMeaning
1EnglishBoltnamed after an early postmaster
2Middle Englishbolt
3Old Englishboltbolt
4Old English-tūnhomestead, village, town
5Old Englishtūnenclosure, yard; place; dwelling
6Proto-West Germanictūnfence
7Proto-Germanictūnąfence; enclosure
8Gaulishdunumfort; hill, hillfort
9Proto-Celticdūnomstronghold, rampart
10Proto-Indo-Europeandʰewh₂-smoke; mist, haze
Every word from Proto-Indo-European dʰewh₂-Every word from Proto-Celtic dūnomEvery word from Gaulish dunum