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1. verb To delay, postpone, or cancel something because of rain. Usually used in passive constructions. I was really looking forward to the baseball game this weekend, but it was rained off at the last minute. We've been trying to get this roadwork done for a while, but the weather keeps raining it off.
2. noun An event or activity that has been delayed, postponed, or canceled because of rain. Often spelled with a hyphen. Spectators are to be aware that there will be no refunds issued in the event of a rain-off. The whole event was a rain off in the end, which was a major disappointment to the whole team who'd worked so hard setting it up.
An event that has been or will be canceled due to inclement weather. Primarily heard in UK. Spectators are to be aware that there will be no refunds issued in the event of a rain-off. I was really looking forward to the football match this weekend, but it turned out to be a rain-off.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.