Where does “elfdock” come from?

elfdock (English) comes from English dock, from Dutch dok, from Middle Dutch docke, from Italian doccia, from Italian doccione, from Latin ductiō, from Latin -tiō, from Latin dissertātiō — small stone, pebble; gravel, rubble.

Ancestry of “elfdock”, step by step

elfdock traces back through two separate lines of ancestry.

via English dock

StepLanguageWordMeaning
1EnglishdockAny of the genus "Rumex" of coarse weedy plants...
2Dutchdokdock
3Middle Dutchdockea doll; channel
4Italiandocciashower; drainpipe; plaster cast
5Italiandoccionespout (for water); gargoyle
6Latinductiōleading (away)
7Latin-tiōtion, -ation, -ing
8Latindissertātiō(spoken) dissertation, discourse, disquisition
9Latindissertusarranged, disposed; explained
10Latindissereresecond-person singular future passive indicative...
11Latindis-asunder, apart, in two; reversal, removal;...
12Latincalceusshoe
13Latincalxlimestone; chalk; the finish line
14Ancient Greekχάλιξsmall stone, pebble; gravel, rubble

via English elf

StepLanguageWordMeaning
1EnglishelfA luminous spirit presiding over nature and...
2Middle Englishelfelf, fairy; spirit, shade
3Old Englishielfelf
4Proto-West Germanicalbielf, fairy
5Proto-Germanicalbīriver
6LatinAlbis
7LatinAlbeus
Every word from Ancient Greek χάλιξEvery word from Latin -tiōEvery word from Latin dis-