What Does Full Nerved Mean?

2 : showing courage or strength.

Are limbs so dear-achieved are sides Full-nerved still warm too hard to stir meaning?

The speaker is perplexed at how something as precious and beautiful as life can always lose out to death, and puts forth a rhetorical question as a way of underlining his or her shock: “Are limbs, so dear-achieved, are sides / Full-nerved, still warm, too hard to stir?” The dead body, albeit surrounded by warm sunlight ...

What does dear-achieved mean?

dear-achieved (adjective): costly to create. stir (verb): move; waken. fatuous (adjective): purposeless. toil (verb): work hard; labour.