Definition of rain date in English:
1An alternative date for an event in case of inclement weather.
- She faced a tough decision: remain in Pomona for the rain date, or make the 2,500-mile trek to Gainesville for the Division 2 racing series season opener.
- One rider who does not plan to return for the rain date is ‘BAD Bruce’ Dickson, whose engine expired during the second qualifying session.
- We went to a National Meet plan of Thursday to Sunday (four days, no rain date).
1.1 Baseball The day to which a rained-out game is postponed.