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Webster 1913 Edition

Verb.

[See

To push; to dash; to throw.

[Obs. or Prov. Eng.]

A cat . . .

possed

them [the rats] about.

Piers Plowman.

See also: pôs and poss.

poss

poss ‎(third-person singular simple present posses, present participle possing, simple past and past participle possed)

(archaic) To mix with a vertical motion, especially when agitating laundry in a tub.
(obsolete, Britain, dialect) To push; to dash; to throw.
- Piers Plowman
  A cat […] possed them [the rats] about.