co-father-in-law
suomi-englanti sanakirjaco-father-in-law englanniksi
The father of one's son- or daughter-in-law; that is, the father-in-law of one's child, or, the father of one spouse in relation to the father of the other spouse; either of two or more men whose children marry each other, such as the father of a bride ''vis-à-vis'' the father of the groom.
{{quote-book|en|year=1884|author=G. A. Grierson
{{quote-book|en|year=1892
{{quote-book|en|year=1996