välittäjä[Finnois]

nom
1 : someone who intervenes with authorities for a person in trouble (usually using underhand or illegal methods for a fee)
2 : any agent (person or animal or microorganism) that carries and transmits a disease
3 : the performer in the middle of a minstrel line who engages the others in talk
4 : someone who buys large quantities of goods and resells to merchants rather than to the ultimate customers