What does affeer mean?
The definition of affeer
Af*feer”, v. t.
Etym: [OF. aforer, afeurer, to tax, appraise, assess, fr. L. ad + forum market, court of justice, in LL. also meaning pri.]

1 To confirm; to assure. [Obs.] “The title is affeered.” Shak.
2 (Old Law)
To assess or reduce, as an arbitrary penalty or amercement, to a certain and reasonable sum. Amercements . . . were affeered by the judges. Blackstone.