English · Slang Candidate

worm castle

Proposed by a contributor, not yet supported by evidence.

Meaning · English

Hardtack.

⚠ Register: derogatory, slang

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).

Topics: Worms

Common questions

What does “worm castle” mean?

Hardtack.

Is “worm castle” formal or informal?

worm castle is generally derogatory, slang.

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