Meaning of restricted code

restrict'ed code'

Pronunciation: [key]
— Sociolinguistics.
  1. a style of language use associated with informal situations, characterized by linguistic predictability and by its dependence on the external context and on the shared knowledge and experience of the participants for conveying meaning. Cf.(def. 11b),
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.