Pratt
来自Big Physics
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wiktionary
From Middle English prat, from Old English prætt. More at prat.
etymonline
Pratt
surname, apparently from Old English *prætt (adj.) "cunning, astute;" related to the late Old English noun prætt "a trick" (compare Middle English prat-wrench "a cunning trick;" see pretty (adj.)). As a type of pottery, named for Staffordshire pottery manufacturer Felix Pratt (1780-1859).
