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2 definitions by Kroxman

(noun) Someone or something which attracts attention, particularly in relation to male sexual arousal.
"Hey, she's hot."
"Yeah, she's definitely a stiffener."
by Kroxman October 28, 2007
An alcoholic drink consumed for the purposes of assisting in inducing sleep.

The opposite of eye-opener.
"As long as everyone's calling it a night, how about a sleeper?"
"You bet."
by Kroxman October 28, 2007