Definition of detainer
1
: the act of keeping something in one's possession
specifically
: the withholding from the rightful owner of something that has lawfully come into the possession of the holder
2
: detention in custody
3
: a writ authorizing the keeper of a prison to continue to hold a person in custody
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Merriam-Webster unabridged
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Time Traveler for detainer
The first known use of detainer was in 1619
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