Tinek is a kalanguya terminology, which means a prohibitive mud-deep usually, found in rice paddies having a continuous supply of water this mud-deep is caused by a pocket ground-bed thus creating a hollow portion allowing mud and water to fill it up.
The exact location of tinek is just eastern part of the school site of the present Central School. It is said that on a date undetermined perhaps even before the coming of Spaniards and Americans, a certain women went to the area presumably to do routine cleaning when she almost drown her self in the mud-deep.If not the presence of a piece of wood floating over it instinct of swallowing in the mud. On that process, the carabao was swallowed in the mud-deep and no one to be found. Since then the area was known all over to be dangerous of the presence of a mud-deep or tinek.
Later on they name the place to Tinoc and the whole municipality, when the municipality was divided into barangays they name the center into Poblacion that is the business center of Tinoc.