"Tubul" is a word in HILIGAYNON, CEBUANO

tubúl - Costiveness, constipation, a hard
stool; to harden, cause constipation.
Ginatubúl siá. He is suffering from
costiveness. He is constipated. Tinubúl siá.
He became constipated or costive. Túblon
nga táo. A person that is often subject to
constipation. Indì ka magkáon sinâ kay
básì túblon ikáw. Don’t eat that, because it
may give you constipation.

tubul n hard stools.
v {1} [B] for stools to become hard.
{2} [a4] have constipation.
Gitubul siya maung dúgayng nalibang, It took him long to have his bowel movement because he is constipated.