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"serpent" is also used as a crossword clue. If that's what you saw, the answer is often snake (5 letters).
Definitions
limbless scaly elongate reptile; some are venomous
Used in a sentence
“He falls into it, who has digg'd a Pit. Who breaks a Hedge is with a Serpent bit.”
“Coiled up behind the shrub, […] was a green imamba, the most dreaded of all South African serpents.”
“Any serpent six feet long looks formidable; and over that length, one takes on the aspect of a chimera.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Winding snake”7 letters
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