Where does “dolphin-striker” come from?

dolphin-striker (English) comes from English dolphin, from Dutch dukdalf, from French duc, from Middle French duc, from Old French duc, from Latin dux, from Latin dūcō, from Proto-Italic doukō — to pull, to draw; to lead.

Ancestry of “dolphin-striker”, step by step

dolphin-striker traces back through two separate lines of ancestry.

via English dolphin

StepLanguageWordMeaning
1EnglishdolphinA carnivorous aquatic mammal in one of several...
2Dutchdukdalfdolphin, post for mooring boats
3Frenchducduke
4Middle Frenchducduke
5Old Frenchducduke
6Latinduxleader, head; commander, general, captain;...
7Latindūcōto lead, guide, conduct, lead away
8Proto-Italicdoukōlead
9Proto-Indo-Europeandéwketi
10Proto-Indo-Europeandewk-to pull, to draw; to lead

via English striker

StepLanguageWordMeaning
1EnglishstrikerAn individual who is on strike; Someone or...
2English-erA person or thing that does an action indicated...
3Middle English-eragentive suffix; agent noun suffix
4Old French-erAlternative form of -ier, verbal suffix;...
5Latin-ārefirst conjugation
6Proto-Italic-āōForms primarily denominative verbs
7Proto-Indo-European-eh₂yétiCreates iterative/ frequentative/ intensive...
8Proto-Indo-European-yétiCreates intransitive, often deponent,...
9Proto-Indo-Europeanyé-
10Chichewaiyehe, she
Every word from Proto-Indo-European dewk-