From Wiktionary, the free dictionary
bo- (“in-law”) + amiko (“friend”)
- IPA(key): [boaˈmiko]
- Rhymes: -iko
- Hyphenation: bo‧a‧mi‧ko
boamiko (accusative singular boamikon, plural boamikoj, accusative plural boamikojn)
- (chiefly humorous) Literally, “friend-in-law”, the friend of one's spouse or the spouse of one's friend.