English · Slang Candidate

cardboard box

Proposed by a contributor, not yet supported by evidence.

Sense 1

Meaning · English

Syphilis.

Where it’s used: Used American English

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).

Meaning · English

Someone who is very dull and uninteresting.

⚠ Register: derogatory, slang

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).

What does “cardboard box” mean?

Syphilis.

Is “cardboard box” formal or informal?

cardboard box is generally slang.

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