to willingly stop having something you want or doing something you like in order to get something more important
sacrifice something for something
A Labour government chose to sacrifice defence for welfare.
sacrifice something to do something
He sacrificed a promising career to look after his kids.
sacrifice yourself (for something)
mothers who sacrifice themselves for their children
2 [intransitive and transitive]RR
to kill an animal or person and offer them to a god in a religious ceremony