Webster's Revised Unabridged Dictionary · 1913

Calends

Calends , noun, plural

[Old English kalendes month, calends, Anglo-Saxon calend month, from Latin calendae; akin to calare to call, proclaim, Greek {not transcribed}. CF. Claim.]

The first day of each month in the ancient Roman calendar.
Collocations (1)
The Greek calends , a time that will never come, as the Greeks had no calends.