an analogous Inuit word is aviliaq
. It is sometimes rendered 'co-spouse'. It can encompass a number of relationships, but they generally involve two people of the same sex having (or having had) association with the same third person, usually of the other. A respectable meaning is the relationship of a man with his wife's former and now dead husband; but can also be used of a current love-rival (possibly further implying the cognisance of both).
An interesting (but new to me until I checked for recent online usage) scenario for its use may be for a lesbian couple, unless the implication is that both have previously had an association with the same man (or may still do). It is the title of a fairly recent film by an Inuk director, one of whose more recent films ('The angry Inuk', about the effect on traditional Inuk communities of external and often remote opposition to sustainable seal-hunting) I commend:https://en.wikipedia.org/wiki/Alethea_Arnaquq-Baril
[with thanks for the further opportunity for linguistic self-indulgence
(mere guide at) Jet Age Museum, Gloucestershire Airporthttp://www.jetagemuseum.org/
TripAdvisor Excellence Award 2015http://www.tripadvisor.co.uk/Attraction ... gland.html