1. : taken unawares : found ill-prepared, inadequately equipped, or poorly supplied
he was caught short by the blunt question
2. : inopportunely seized with a need to relieve oneself
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caught short (informal)
Having a sudden, uncontrollable need to urinate or defecate
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Main Entry: ↑short
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caught short
1 : not having enough of something
Don't be caught short! Make sure you stock up on supplies before you set out on your trip.
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Main Entry: ↑catch
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Main Entry: ↑short
Useful english dictionary. 2012.