hill to die on

Meanings

1. An issue to pursue with a wholehearted conviction or a single-minded focus, with little or no regard to the cost and no intent of equivocation or compromise.

Etymology

An allusion to the instances where a military doggedly pursues a goal or defends a position no matter the cost or (lack of) benefit, typically involving a hill (high ground). Examples include Battle of Hamburger Hill, Battle of Thermopylae, and Last Stand Hill.