Symbol: Unlike Freud, who insisted that the rapier is a phallic symbol, we believe today that the rapier stands for “separation,” for cutting something. See Scissors.
Vision: Dreaming about a rapier may have a sexual connotation, but the image can also stand for an immediate separation (or fear of separation). Being attacked by a rapier stands for a drastic event. Fighting with a rapier: success in the struggle to combat evil gossip, if you can keep present emotions under control.
Depth Psychology: The dream image of a rapier means you will soon be required to make an emotional decision.
The rapier might also be a symbol of aggressive sexuality. Woman may see such a dream as a sign of danger, since women generally have an aversion to violent sex.... Dreamers Dictionary