Where does “Blockiererin” come from?

Blockiererin (German) comes from German Blockierer, from German blockieren, from French bloquer, from Old French bloquer, from Middle Dutch blok, from Old Dutch blok, from Proto-West Germanic blokk, from Proto-Germanic blukką — thick plank, beam, pile, prop.

Ancestry of “Blockiererin”, step by step

StepLanguageWordMeaning
1GermanBlockiererblocker
2Germanblockierento block; to lock
3Frenchbloquerto block (physically), to barricade, to obstruct
4Old Frenchbloquer
5Middle Dutchbloktreetrunk
6Old Dutchbloklog
7Proto-West Germanicblokkblock, log
8Proto-Germanicblukkąblock, log
9Proto-Indo-Europeanbhulg'-
10Proto-Indo-Europeanbhelg'-thick plank, beam, pile, prop
Every word from Proto-Indo-European bhelg'-Every word from Proto-Indo-European bhulg'-Every word from Proto-Germanic blukką