'Tag-rag' definitions:

Definition of 'Tag-rag'

From: GCIDE

Tag-rag \Tag"-rag`\, n. & a. [See Tag an end, and Rag.] The lowest class of people; the rabble. Cf. {Rag, tag, and bobtail}, under Bobtail. [1913 Webster]
If the tag-rag people did not clap him and hiss him, I am no true man. --Shak. [1913 Webster]