'Priapism' definitions:

Definition of 'priapism'

(from WordNet)
noun
Condition in which the penis is continually erect; usually painful and seldom with sexual arousal

Definition of 'Priapism'

From: GCIDE
  • Priapism \Pri"a*pism\, n. [L. priapismus, Gr. ?, from Priapus the god of procreation, the penis, Gr. ?: cf. F. priapisme.] (Med.) More or less permanent erection and rigidity of the penis, with or without sexual desire. [1913 Webster]