Webster's English Dictionary

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hiccup

1. hic.cup also hic.cough \'hik-(.)*p\ n [imit.] 1: a spasmodic inbreathing 
   with closure of the glottis accompanied by a pec uliar sound 2: an attack 
   of hiccuping - usu. used in pl. but sing. or pl. in constr. 
2. hiccup also hiccough vi also hic.cuped also hic.cupped;  also 
   hic.cup.ing;  also hic.cup.ping : to make a hiccup; also : to be affected 
   with hiccups