This is the 7660th most frequent Swedish word.
teemu
"Teemu" is not a Swedish word; it is a Finnish name.
Here, 'Teemu' is used as a proper noun, a name of a person.
Teemu är en finsk namn.
Teemu is a Finnish name.
In this sentence, 'Teemu' refers to a specific person and is the direct object of the verb 'såg' (saw).
Jag såg Teemu i parken igår.
I saw Teemu in the park yesterday.
Here, 'Teemu' is in the genitive form ('Teemus'), indicating possession, meaning the dog belongs to Teemu.