Source : WordNet®

hiccup
     v : breathe spasmodically, and make a sound; "When you have to
         hiccup, drink a glass of cold water" [syn: {hiccough}]
     [also: {hiccupping}, {hiccupped}]

hiccup
     n : (usually plural) the state of having reflex spasms of the
         diaphragm accompanied by a rapid closure of the glottis
         producing an audible sound; sometimes a symptom of
         indigestion; "how do you cure the hiccups?" [syn: {hiccough},
          {singultus}]
     [also: {hiccupping}, {hiccupped}]