It has evolved from these various meanings:
rape1 (rāp)
n.
The crime of forcing another person to submit to sex acts, especially sexual intercourse.
The act of seizing and carrying off by force; abduction.
Abusive or improper treatment; violation: a rape of justice.
tr.v., raped, rap·ing, rapes.
To force (another person) to submit to sex acts, especially sexual intercourse; commit rape on.
To seize and carry off by force.
To plunder or pillage.
[Middle English, from rapen, to rape, from Old French raper, to abduct, from Latin rapere, to seize.]
raper rap'er n.
So strictly speaking, it is not incorrect, however, it is less commonly used in such a manner in our society these days.
From a personal point of view, the word "rape" is not a dirty one, and shouldnt be made one as such.
It is the crime that is vile - not the word. I feel that if the word was less demonised, then it is just one tiny step closer to people being able to come forward when they have been raped - and be able to say so in such terms.