Wiktionary
last-born
n. (alternative form of lastborn English)
Usage examples of "last-born".
She was furious, in a weary sort of way, for though Rhys had no sons, he did leave a legal heir, one marked with the approval of the King himself, Rhodry, Rhys's younger brother and her last-born son.
It is an extremely dangerous being, nonintelligent in the adult stage, which on its home planet is continuously under attack from the time it is born until it dies, usually at the tentacles and teeth of its last-born.