The story
From co- + sibling-in-law.
Etymology from Wiktionary, CC BY-SA 4.0.
co-sibling-in-law
Today it means: One's spouse's sibling's spouse; either of two (or more) people who marry siblings, from the perspective of the other. Full definition →
Today it means: One's spouse's sibling's spouse; either of two (or more) people who marry siblings, from the perspective of the other. Full definition →
From co- + sibling-in-law.
Etymology from Wiktionary, CC BY-SA 4.0.