tibegek noun English. A mythical eagle, believed to be the largest bird and to create the lunar eclipse as it attempts to eat the moon. Example sentence: Subanen. Kiin daw bulan, sa' laaman, dinapa' tibegek, laak masi' balus, tabia' di nga mekegulang, pulu' laak pegasal, metau mektalu' dun, nda'en tanan siben maita'. English. When the moon is in eclipse, it is said to have been eaten by a tibegek bird; but, begging the pardon of the old people, it is not true; they were just passing on a myth about s.t. that they had never seen. Generic. manukmanuk