English
thoroughpass
From thorough- + pass.
Proto-Indo-European *peth₂- ‘to spread, stretch out’
…
Latin passus ‘a step’
Vulgar Latin *passō ‘to step, walk, pass’
Old French passer ‘to step, walk, pass’
Middle English passen ‘to pass’
English pass
Today it means
noun A connected passage; conduit or channel.
Sources
Sources: Wiktionary, “thoroughpass”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / thoroughpass