No, I think it is a name that some German company uses for their partial hard top sports cars - the Targa. I also think their top is a one piece removable panel, the seller / dealer just has his or her head up a lower body orifice. Not sure why anyone would want a one piece in their JK, would make for a difficult time getting it to fit in the back when taking it off.
Yeah targa top is a European term for a top where only the panels above the front seats are removeable. Think Porsche 911 targa. 930 turbo being my favourite