Real Dictionary

hiccup
When you have hiccups, you make repeated sharp sounds in your throat, often because you have been eating or drinking too quickly.
You can refer to a small problem or difficulty as a hiccup, especially if it does not last very long or is easily put right.

hiccup in American English
a sudden, involuntary contraction of the diaphragm when it begins to allow air into the lungs only to have the glottis suddenly close, producing an abrupt sound
to make a hiccup or hiccups
to utter with hiccups
intransitive verb: to make the sound of a hiccup
noun: a quick, involuntary inhalation that follows a spasm of the diaphragm and is suddenly checked by closure of the glottis, producing a short, relatively sharp sound

hiccup in British English
noun: a spasm of the diaphragm producing a sudden breathing in followed by a closing of the glottis, resulting in a sharp sound
verb: to make a hiccup or hiccups