Where does “bubbletop” come from?

bubbletop (English) comes from English top, from Middle English top, from Old English topp, from Proto-West Germanic *topp, from Proto-Germanic tuppaz, from Proto-Indo-European dumb- — tail, rod, staff, pole, penis; tail, rod, staff,...

bubbletop (English): An automobile with a transparent dome on top,...

Definitions

  1. An automobile with a transparent dome on top,...

Ancestry of “bubbletop”, step by step

bubbletop traces back through two separate lines of ancestry.

via English top

StepLanguageWordMeaning
1EnglishtopThe highest or uppermost part of something; A...
2Middle EnglishtopThe summit or top of something, especially a...
3Old Englishtopptop, summit (of something)
4Proto-West Germanic*topptop, summit, crest
5Proto-Germanictuppaztuft, plait; top, summit
6Proto-Indo-Europeandumb-tail, rod, staff, pole, penis; tail, rod, staff,...

via English bubble

StepLanguageWordMeaning
1EnglishbubbleA spherically contained volume of air or other...
2Englishanti-Against, hostile to; Contrasting with the norm;...
3Ancient Greekἀντι-anti-, against; like, reminiscent of
4Ancient Greekᾰ̓ντῐ́opposite
Every word from Proto-Indo-European dumb-
bubbletop — Etymology, Origin & Word History | Etymology Explorer