English

Noun

countermure ‎(plural countermures)

1. A wall raised behind another, to supply its place when that is breached or destroyed.

   (Can we find and add a quotation of Knolles to this entry?)

Verb

countermure ‎(third-person singular simple present countermures, present participle countermuring, simple past and past participle countermured)

1. (transitive) To fortify with a wall behind another wall.
   • 15??, Thomas Kyd, The Spanish Tragedy

     They are plac'd in those empyreal heights,
     Where, counter-mur'd with walls of diamond,
     I find the place impregnable.