DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   rale
       n 1: a rapid series of short loud sounds (as might be heard with
            a stethoscope in some types of respiratory disorders); "the
            death rattle" [syn: rattle, rattling, rale]