D defs.my
Entry 1 sense Webster, 1913

Cardboard

/(kärd"bōrd`)/ · Card·board · IPA /ˈkɑɹdˌbɔɹd/
01 n. A stiff compact pasteboard of various qualities, for making cards, etc., often having a polished surface.
  1. 1.
    A stiff compact pasteboard of various qualities, for making cards, etc., often having a polished surface.