The examples you provided seem to have some context missing, but I think it is most likely a dialectal term from Middle English 'skainen' meaning "to scrape, to graze", which indeed comes from Old Norse.
Alternatively, it might be a misspelling of "skein" which has to do with winding or weaving, possibly referring to nets or fishing lines in this case.
Sources:
https://quod.lib.umich.edu/m/middle-english-dictionary/dictionary/MED40606/https://en.wiktionary.org/wiki/skein