Where does “spärrning” come from?

spärrning (Swedish) comes from Swedish spärra, from English spar, from Middle English sparre, from Middle Dutch sparre, from Old Dutch sparro, from Frankish sparro, from Proto-Germanic sparrô, from Proto-Indo-European (s)par- — beam, log.

Ancestry of “spärrning”, step by step

StepLanguageWordMeaning
1Swedishspärrato block; to space out
2EnglishsparA rafter of a roof; A thick pole or piece of...
3Middle Englishsparrespar, rafter, beam
4Middle Dutchsparrepole, beam; rafter
5Old Dutchsparro
6Frankishsparro
7Proto-Germanicsparrôa wooden beam, a log
8Proto-Indo-European(s)par-beam, log
Every word from Proto-Indo-European (s)par-Every word from Proto-Germanic sparrôEvery word from Frankish sparro