Calends \Cal"ends\, n. pl. [OE. kalendes month, calends, AS. calend month, fr. L. calendae; akin to calare to call, proclaim, Gr. ??????. CF. Claim.]

The first day of each month in the ancient Roman calendar. [Written also kalends.]

The Greek calends, a time that will never come, as the Greeks had no calends.

Source: Webster's Revised Unabridged Dictionary (1913)