(alcohol) Clear, free of dregs and lees; old and strong.
No longer fresh, in reference to food, urine, straw, wounds, etc.
No longer fresh, new, or interesting, in reference to ideas and immaterial things; cliche, hackneyed, dated.
No longer nubile or suitable for marriage, in reference to people; past one's prime.
Fallow, in reference to land.
Unreasonably long in coming, in reference to claims and actions.
a stale affidavit
Taking a long time to change
Worn out, particularly due to age or over-exertion, in reference to athletes and animals in competition.
Out of date, unpaid for an unreasonable amount of time, particularly in reference to checks.
Of data: out of date; not synchronized with the newest copy.
The bug was found to be caused by stale data in the cache.