A sheath, usually of plastic, designed to fit in a shirt pocket and hold pens and other small implements, preventing them from tearing or staining the shirt.
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(US, slang, metonym) A white-collar technical worker such as a scientist or engineer, especially in military and space applications; a nerd or someone with a nerdy job.
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The vocabulary of software engineers, AI researchers, and anyone living in a terminal or on GitHub — from LLM to MCP, CORS to vibe coding, agentic to enshittification.
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