Where does “ridgehead” come from?

ridgehead (English) comes from English ridge, from Middle English rigge, from Old English hryċġ, from Old English tūn, from Proto-West Germanic tūn, from Proto-Germanic tūną, from Gaulish dunum, from Proto-Celtic dūnom — smoke; mist, haze.

ridgehead (English): Any of the family Melamphaidae of small, deep-sea...

Definitions

  1. Any of the family Melamphaidae of small, deep-sea...

Ancestry of “ridgehead”, step by step

ridgehead traces back through two separate lines of ancestry.

via English ridge

StepLanguageWordMeaning
1EnglishridgeThe back of any animal; especially the upper or...
2Middle Englishrigge
3Old Englishhryċġridge; back, spine, ridge, elevated surface
4Old Englishtūnenclosure, yard; place; dwelling
5Proto-West Germanictūnfence
6Proto-Germanictūnąfence; enclosure
7Gaulishdunumfort; hill, hillfort
8Proto-Celticdūnomstronghold, rampart
9Proto-Indo-Europeandʰewh₂-smoke; mist, haze

via English head

StepLanguageWordMeaning
1EnglishheadThe part of the body of an animal or human which...
2English-yAdded to nouns and adjectives to form adjectives...
3Middle English-yDesignates an adjective, in many cases formed by...
4Old English-iġ-y, -ic
5Proto-West Germanic-gForms adjectives from nouns and verbs with a...
6Proto-Germanic-gaz-y
7Proto-Indo-European-ḱos-y, -ic
Every word from Proto-Indo-European dʰewh₂-