The Collaborative International Dictionary of English v.0.48:

Peristole \Pe*ris"to*le\ (p[-e]*r[i^]s"t[-o]*l[-e]), n. [NL.:
   cf. F. p['e]ristole. See Peristaltic.] (Physiol.)
   Peristaltic action, especially of the intestines.
   [1913 Webster]