piilukko (Finnish) comes from Finnish pii, from Swedish bi, from Old Swedish bī, from Old Norse bý, from Proto-Germanic biją, from Proto-Germanic bijǭ, from Proto-Indo-European bʰey- — bee.
piilukko (Finnish): flintlock
Definitions
flintlock
Ancestry of “piilukko”, step by step
piilukko traces back through two separate lines of ancestry.