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Definition 2024

twindom ‎(plural not attested)

The state, condition, or world of twins; twins collectively.
- 2007, Randi Sabroe Inger Merete Sarborg, ‎Randi Sabroe, Inger Merete Sarborg, To Clone Or Not to Clone - Page 35:
  As an adult, twindom elicits more peculiar reactions. I have lost count of the number of men who have asked, nudge, nudge, wink, wink, whether we ever go out with the same bloke. The answer, by the way, is no.