What's the meaning of the title?
It's taken from William Shakespeare's Love's Labor's Lost, Act 4, Scene 3:
'A lover's eyes will gaze an eagle blind'
It was a common myth that an eagle's sight is so powerful it could safely gaze directly into the sun. Eagles were often regarded as royalty among birds, as eagles were perceived as the bird that could fly the highest (i.e. reaching heaven), therefore they were the animal closest to God.
The quote's meaning is saying the warmth of a lover's gaze is so divinely brilliant that it can blind even an eagle, something even the sun can't do.