Definition of "pah"

Fie! fie! fie! pah! pah! Give me an ounce of civet, good apothecary, to sweeten my imagination.

c. 1603–1606, William Shakespeare, “The Tragedie of King Lear”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act IV, scene vi]

She was rarely suffered out of their sight; never went beyond the domains of the castle, unless well attended, or, rather, well watched; had continual lectures read to her about strict decorum and implicit obedience; and, as to the men—pah! she was taught to hold them at such distance and distrust that, unless properly authorized, she would not have cast a glance upon the handsomest cavalier in the world—no, not if he were even dying at her feet.

1819, Washington Irving, The Spectre Bridegroom