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The Collaborative International Dictionary
Peasen

Pease \Pease\, n.; obs.pl. Peases, Peasen. [See Pea.]

  1. A pea. [Obs.] ``A peose.'' ``Bread . . . of beans and of peses.''
    --Piers Plowman.

  2. A plural form of Pea. See the Note under Pea.

Wiktionary
peasen

n. (context archaic English) (plural of pease English)