Noah Webster
Hickup
HICK'UP, noun [The English is a compound of hic and cough; and hic may be allied to hitch, to catch. The word is generally pronounced hick-up.]
A spasmodic affection of the stomach, esophagus, and muscles subservient to deglutition.
Convulsive catch of the respiratory muscles, with sonorous inspiration; repeated at short intervals.
HIC'COUGH
HICK'UP, verb intransitive To have a spasmodic affection of the stomach from repletion or other cause.