Not Mongolian, in fact, but a Filipino Tagalog word meaning “child.

'Anak' (Filipino for child) is a Tagalog song written by Filipino folk-singer Freddie Aguilar. It was a finalist for the inaugural 1977 Metropop Song Festival held in Manila.

According to the Book of Numbers, during the conquest of Canaan by the Israelites, Anak was a well known figure, and a forefather of the Anakites (aka. Anakim) who were strong and tall descendants of the Nephilim. The text states that Anak was a Rephaite and a descendant of Arba.