The Collaborative International Dictionary of English v.0.48:
Harridan \Har"ri*dan\ (h[a^]r"r[i^]*dan), n. [F. haridelle a worn-out horse, jade.] A worn-out strumpet; a vixenish woman; a hag. [1913 Webster] Such a weak, watery, wicked old harridan, substituted for the pretty creature I had been used to see. --De Quincey. [1913 Webster]WordNet (r) 3.0 (2006):
harridan n 1: a scolding (even vicious) old woman