Artificial intelligent assistant

piys

† piys, -e Obs.
  [(for *pīs), a. OF. piz, pis breast (in Gower M.O.):—L. pectus.]
  The breast.

c 1400 Lanfranc's Cirurg. 262 His lungis miȝte be þe worse þerfore & also his piys. Ibid. 300 Sumtyme a veine wole breke in þe piyse or in þe lungis.

Oxford English Dictionary

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