D defs.my
Entry 2 senses · 2 variants Webster, 1913

Countermure

/(-m?r`)/ · Coun·ter·mure · IPA /ˈkaʊntɚˌmjʊɹ/
01 n. A wall raised behind another, to supply its place when breached or destroyed. [R.] Cf. Contramure.
  1. 1.
    A wall raised behind another, to supply its place when breached or destroyed. [R.] Cf. Contramure.(Fort.) [R.] See: Contramure
02 v. t. To fortify with a wall behind another wall.
imp. & p. p. Countermured; p. pr. & vb. n. Countermuring
  1. 1.
    To fortify with a wall behind another wall.[R.]