A male that you hook-up with on Halloween.
Sarah- " I totally hooked up with Tim last night!"

Rachel- " OMG He was your Halloweiner!"
by Esyleal November 14, 2011
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A person too pussy to fashion themselves as an authentic Halloween character on the 31st of October.
"Terry is a total halloweiner, he came to my party dressed as James Bond"
by Bell 85 October 28, 2007
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