a. 安息日的, 周期性休息期的

[ adj ]
of or relating to the Sabbath
<adj.pert>
Friday is a sabbatical day for Muslims

Sabbatic \Sab*bat"ic\, Sabbatical \Sab*bat"ic*al\, a. [Gr. ?:
cf. F. sabbatique.]
Of or pertaining to the Sabbath; resembling the Sabbath;
enjoying or bringing an intermission of labor.

{Sabbatical year} (Jewish Antiq.), every seventh year, in
which the Israelites were commanded to suffer their fields
and vineyards to rest, or lie without tillage.