Definition
A time that never occurs; never; when pigs fly.
Origins
Calque of Latin ad kalendās Graecās; unlike the Roman calendar, the Greek calendar had no calends.
In Context
- "Blockheads, friends of my heart and liver, cousins of my tripe, are you ignorant that this symposium is as authentic as any of those tales of the Greek Calends, which you swallow and digest so easily, [...]?"
- "My book with Professor [John Ronald Reuel] Tolkien – any book in collaboration with that great but dilatory and unmethodical man – is dated, I fear, to appear on the Greek Kalends!"