piikkiherne (Finnish) comes from Finnish herne, from Proto-Finnic herneh, from Proto-Balto-Slavic *źírˀnan, from Proto-Indo-European ǵr̥h₂nóm, from Proto-Indo-European ǵr̥h₂nós, from Proto-Indo-European ǵerh₂- — to grow old, to mature.
piikkiherne (Finnish): gorse, "Ulex europaeus"
Definitions
gorse, "Ulex europaeus"
Ancestry of “piikkiherne”, step by step
piikkiherne traces back through two separate lines of ancestry.