Where does “crossheading” come from?

crossheading (English) comes from English heading, from English -ing, from Old English -ing, from Old English -tūn, from Old English tūn, from Proto-West Germanic tūn, from Proto-Germanic tūną, from Gaulish dunum — smoke; mist, haze.

crossheading (English): A narrow opening for ventilation driven through coal or rock, separating the two passages

Definitions

  1. A narrow opening for ventilation driven through coal or rock, separating the two passages

Ancestry of “crossheading”, step by step

crossheading traces back through two separate lines of ancestry.

via English heading

StepLanguageWordMeaning
1Englishheadingpresent participle of head; The title or topic of...
2English-ingUsed to form gerunds, a type of verbal nouns,...
3Old English-ingForming nouns from verbs, indicating action,...
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

via English cross

StepLanguageWordMeaning
1EnglishcrossA geometrical figure consisting of two straight...
2Frenchcroixcross; a representation of a cross; the cross as...
3GermanKreuzcross; clubs; sharp
4SpanishCruzcross
5Portuguesecruzcross
6Italiancrocecross
7Latincruxwooden frame on which criminals were crucified,...
8Proto-Italic*kruks
9Proto-Indo-Europeansḱer-to caw, crow
Every word from Proto-Indo-European dʰewh₂-Every word from Proto-Celtic dūnomEvery word from English -ing