1. a person in tattered clothing; a shabby person
"After enjoying a delicious dinner of brains, the zombie wandered around looking like a tatterdemalion."
"Just because you sleep in a coffin doesn't mean you get to be a tatterdemalion."
Origin: (from etymonline.com)
"'ragged child, person dressed in old clothes,' c.1600, probably from tatter (n.), with fantastic second element, but perhaps also suggested by Tartar, with a contemporary sense of 'vagabond, gypsy.'"