Definition of prester
1 obsolete : a venomous snake
2 obsolete : a scorching whirlwind
3 archaic : a neck vein swollen with anger
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Origin and Etymology of prester
Middle English, from Latin, venomous snake, scorching whirlwind, from Greek prēstēr venomous snake, scorching whirlwind, neck vein swollen with anger, from prēthein to blow up, swell out, spout, blow into a flame
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