cardboard box index noun [C, usually S] UK /ˌkɑːd.bɔːd ˈbɒks ˌɪn.deks/ US /ˌkɑːrd.bɔːrd ˈbɑːks ˌɪn.deks/ a way of measuring the health of the economy according to how many cardboard boxes are being produced or shipped, since these are widely used for packaging the goods that people buy The cardboard box index is a tracker that … Continue reading New words – 4 August 2025 The post New words – 4 August 2025 appeared first on About Words - Cambridge Dictionary blog.