"Grue" has a surprising variety of meanings:

Obsolete/dialiectical English: to shudder with fear, or a shudder (related to "gruesome")

Computer games: in Zork, a monster that eats adventurers in the dark [0]

Linguistics: an English translation for words that cover the entire green-blue part of the spectrum (in languages that don't distinguish blue from green) [1]

Philosophy: a color name that is equivalent to green until a specific future time, at which point it becomes equivalent to blue (used to raise questions about how to validly extrapolate into the future) [2]

[0]: https://zork.fandom.com/wiki/Grue

[1]: https://en.wikipedia.org/wiki/Blue–green_distinction_in_lang...

[2]: https://en.wikipedia.org/wiki/New_riddle_of_induction#Grue_a...

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andy99 3 days ago | parent [-]

It also means crane in French, both the construction kind and the bird. When I first saw the name I guessed there must be some relationship to cranes.

	▲	linguist2 3 days ago \| parent [-]
		Others: French: grue may also crane both as the bird and the construction machine. Italian: gru also means crane (bird). Norwegian: grue may either mean the verb "to dread” or a noun meaning fireplace/hearth. Gheg Albanian (dialect): grue means wife/woman. Primarily Scottish but also Northern English (regionalism): (1) ground-gru / grue means a half-liquid snow or ice that forms and floats on the surface of a river, sometimes thought to have risen from the riverbed. (2) a tiny bit or particle, e.g. He hasn’t a grue of sense. Similar words: Latin: grus may mean a crane (bird) or a type of siege engine / war machine bearing similarity to the neck of a crane (bird). Catalan: grua - same as French. Esperanto: gruo also means crane (bird) or machine. Swiss German (dialect): grüezi means "God greets you". Romanian: grâu means wheat. English: GRU is term for Russian Main Intelligence Directorate (Glavnoye Razvedyvatelnoye Upravlenie).