Thirty-dash: Meaning and Definition of

30-dash

Pronunciation: (thûr'tē-dash"), [key]
— n.
  1. the symbol —30—, —XXX—, —O—, etc., often used to mark the end of a piece of copy, story, etc.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.