get (one's) head around (something)

To understand something that is challenging or confusing. It took a while, but I've finally gotten my head around this chapter in my calculus textbook. Wait, you two are dating now? It's going to take a little while for me to get my head around that!

Common Names:

Name	Pronounced	Usage
Latifah	-	Arabic
Topaz	TO-paz	English (Rare)
Eleonore	e-le-o-NO-rə	German
Silvia	['silviə]
Amis	-	Medieval English, Medieval French
Gabija	-	Lithuanian, Baltic Mythology