cardboards

/K AA1 R D B AO0 R D Z/
noun
  1. 1

    A wood-based material resembling heavy paper, used in the manufacture of boxes, cartons and signs.

  2. 2

    (figurative) Something flat or insubstantial.

adjective
  1. 1

    Made of or resembling cardboard; (figurative) flat or flavorless.