kidney

munuainen An organ in the body that filters the blood, producing urine.
{{quote-magazine|title=A better waterworks|date=2013-06-01|volume=407|issue=8838
This organ (of an animal) cooked as food.
puhekieltä constitution Constitution, temperament, nature, type, character, disposition. (qualifier)
(RQ:Shakespeare Wives)

Falstaff: " … think of that, - a man of my kidney, - think of that, …"

millions in the world of this man's kidney

Your poets, spendthrifts, and other fools of that kidney, pretend, forsooth, to crack their jokes on prudence.

(rfquotek)