Hello, I do not speak Finnish at all. I'm studying Japanese now and I have found out they have an interesting word for glans penis. Then I started to study this site and it is evident many languages have one word for glans penis and acorn. It is "the head of tortoises" in Japanese. But it is not acorn-related in Finnish, either. What does terska mean? Which word is terska related to? Thanks, Encolpius.