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
Last modified on 17 June 2013, at 23:54