I think it's lovely, too, inselp.

I checked MW online and found that it's not only lovely, but also standard:

Main Entry: 3purl
Function: noun
Etymology: perhaps of Scandinavian origin; akin to Norwegian purla to ripple
Date: circa 1522
1 : a purling or swirling stream or rill
2 : a gentle murmur or movement (as of purling water)

Now, does this mean my total working vocabularly just increased by one or two?

Book regards,
WordWaters