pres·​ter | \ˈprestə(r)\
plural -s

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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History and Etymology for 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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a soft lustrous wool fabric with mohair

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