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1.
A woman who understands others very well. Historically, the name is derived from Hungarian St. Irena, the bringer of humane peace. In Greek 'Irena' literally means 'peace.' This is a classic European women's name.

Typically Irenas' are willful, bright, loyal, and gorgeous women. They desire a serene, tasteful life, filled with many exotic escapades.
Every Irena I know is an wonderful person.. you'd be lucky to meet at least one in your life. . .
by a femme siren August 14, 2008
 
2.
A murderous vampire type person.
Person A:"...why do her eyes glow at night time...?"
Person B:"..seems to me she must be Irena.."
by Fallen Star * March 14, 2008