v. Obs. [f. ppl. stem of expūmicāre, f. ex- out + pūmic-, pūmex PUMICE.] trans. To clean with pumice-stone; ‘to purge or make clean’ (Blount). Hence † Expumication, the action of cleaning with pumice.

1

1656–81.  Blount, Glossogr., Expumicate.

2

1658.  Phillips, Expumication.

3

So 1775.  in Ash.

4