Last modified on 22 May 2014, at 20:54

brick wall

EnglishEdit

NounEdit

brick wall (plural brick walls)

  1. Used other than as an idiom: see brick,‎ wall.
  2. (idiomatic) An obstacle.
    They all ran up against the brick wall of high cost until the cryogenic option was proven feasible in 1973.Wind Tunnels of NASA