Green’s Dictionary of Slang

1. a victim, a dupe.

1599		Preservation of King Henry VII (1866) 48: For a fowler Merrily playes on a pipe, when he craftily taketh a plouer .
1607		Dekker & Webster Northward Hoe I i: I warrant her husband was forth a Towne all this while [...] whilst she was at home with her Plouers, Turkey, Chickens.
1614		Jonson Bartholomew Fair IV ii: Was there ever green plover so pull’d!
1626		Jonson Staple of News II i: And what plover’s that They have brought to pull?

2. a promiscuous woman, a prostitute.

1614		Jonson Bartholomew Fair IV v: Here will be ‘Zekiel Edgworth, and three or four hallants [...] and I ha’ neither plover nor quail for ’em.
1678		J. Ray Proverbs (2nd edn) 317: A Leicestershire plover, i.e. a Bag-pudding.