The Collaborative International Dictionary of English v.0.48:

Maister \Mais"ter\, n.
   Master. [Obs.] --Chaucer. Spenser.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Maister \Mais"ter\, a.
   Principal; chief. [Obs.] --Chaucer.
   [1913 Webster] Maistrie
   Maistre