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purpura (n.)[purpura 词源字典]: disease characterized by purple patches on the skin, 1753, from Modern Latin, from Latin purpura "purple dye" (see purple (n.)). Related: Purpuric.[purpura etymology, purpura origin, 英语词源]
purpurescent (adj.): 1890, from Latin purpura (see purple (n.)) + -escent. The Latin adjective was purparescent, present participle of purpurascere "to become purple," from purpurare.
purr (v.): 1610s, of imitative origin. Related: Purred; purring. As a noun from c. 1600.
purse (n.): Old English pursa "little bag made of leather," especially for carrying money, from Medieval Latin bursa "leather purse" (source also of Old French borse, 12c., Modern French bourse; see bourse), from Late Latin bursa, variant of byrsa "hide," from Greek byrsa "hide, leather." Change of b- to p- perhaps by influence of Old English pusa, Old Norse posi "bag."

Meaning "woman's handbag" is attested from 1951. Meaning "sum of money collected as a prize in a race, etc.," is from 1640s. Purse-strings, figurative for "control of money," is from early 15c. Purse-snatcher first attested 1902 (earlier purse-picker, 1540s). The notion of "drawn together by a thong" also is behind purse-net (c. 1400).
purse (v.): c. 1300, "put in a purse;" c. 1600 as "draw together and wrinkle" (as the strings of a money bag), from purse (n.). Related: Pursed; pursing.
purse-seine (n.): 1870; see purse (n.) + seine.
purser (n.): mid-15c., "treasurer," especially "caretaker of accounts and provisions on a ship," originally also "maker of purses" (late 15c.), agent noun from Middle English purse (see purse (n.)). From late 13c. as a surname.
pursual (n.): 1814, from pursue + -al (2).
pursuance (n.): 1590s, from Middle French poursuiance "act of pursuing," from Old French poursuir (see pursue).
pursuant (adj.): late 14c., from Old French poursuiant, porsivant, present participle of porsuir, porsivre "chase, pursue" (see pursue). Meaning "carrying out; following, according" is from 1690s.
pursue (v.): late 13c., "to follow with hostile intent," from Anglo-French pursuer and directly from Old French poursuir (Modern French poursuivre), variant of porsivre "to chase, pursue, follow; continue, carry on," from Vulgar Latin *prosequare, from Latin prosequi "follow, accompany, attend; follow after, escort; follow up, pursue," from pro- "forward" (see pro-) + sequi "follow" (see sequel). Meaning "to proceed, to follow" (a path, etc.), usually figurative (a course of action, etc.), is from late 14c. This sense also was in Latin. Related: Pursued; pursuing. For sense, compare prosecute.
pursuer (n.): late 14c., agent noun from pursue.
pursuit (n.): late 14c., "persecution," also "action of pursuit," from Anglo-French purseute, from Old French porsuite "a search, pursuit" (14c., Modern French poursuite), from porsivre (see pursue). Sense of "one's profession, recreation, etc." first recorded 1520s. As a type of track cycling race from 1938.
purty (adj.): 1829, representing a colloquial pronunciation of pretty (adj.).
purulent (adj.): early 15c., from Middle French purulent and directly from Latin purulentus "full of pus," from pus (genitive puris) "pus" (see pus). Related: Purulence.
purvey (v.): late 13c., from Anglo-French porveire, purveire and directly from Old French porveoir "to provide, prepare, arrange" (Modern French pourvoir), from Latin providere "make ready" (see provide, which now usually replaces it). Related: Purveyed; purveying.
purveyance (n.): c. 1300, from Anglo-French purveance and directly from Old French porveance, from Latin providentia (see providence).
purveyor (n.): c. 1300, from Old French porveor (13c.), agent noun from porveoir (see purvey).
purview (n.): mid-15c., "body of a statute," from Anglo-French purveuest "it is provided," or purveu que "provided that" (late 13c.), clauses that introduced statutes in old legal documents, from Anglo-French purveu, Old French porveu (Modern French pourvu) "provided," past participle of porveoir "to provide," from Latin providere "make ready" (see provide). Sense of "scope, extent" is first recorded 1788 in "Federalist" (Madison). Modern sense and spelling influenced by view (n.).
pus (n.): late 14c., from Latin pus "pus, matter from a sore;" figuratively "bitterness, malice" (related to puter "rotten" and putere "to stink"), from PIE *pu- (2) "to rot, decay" (cognates: Sanskrit puyati "rots, stinks," putih "stinking, foul, rotten;" Greek puon "discharge from a sore," pythein "to cause to rot;" Lithuanian puviu "to rot;" Gothic fuls, Old English ful "foul"), perhaps originally echoic of a natural exclamation of disgust.