Finnish word toosa comes from Swedish dosa (Box (rectangular container).)

Detailed word origin of toosa

Dictionary entry	Language	Definition
dosa	Swedish (swe)	Box (rectangular container).
toosa	Finnish (fin)	(colloquial) A (poor) machine.. (colloquial) A TV set or radio. (vulgar) vagina. A small box or container made of metal, plastic or cardboard etc.