STEP Hebrew Lexicon: פָּרַר

1) to break, frustrate

1a) (Hiphil)

1a1) to break, violate

1a2) to frustrate, make ineffectual

1b) (Hophal)

1b1) to be frustrated

1b2) to be broken

1b3) to break

1c) (Pilpel) to break to bits, shatter

Also means: pur (פּוּר "to break" H6331)