Any place that serves particularly disgusting, putrid, or inedible food. ("Ptomaine" refers to amines or alkaloids produced by putrefying organic matter, typically animal tissue. Used in reference especially the dining facility of institutions such as schools or military barracks.) I would avoid that restaurant at all costs—it's a real ptomaine palace
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.