The Collaborative International Dictionary of English v.0.48:

Maselyn \Mas"e*lyn\, n.
   A drinking cup. See 1st Maslin, 2. [Obs.] --Chaucer.
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The Collaborative International Dictionary of English v.0.48:

Maslin \Mas"lin\, n. [OE. missellane, misceline, miscelin,
   meslin, fr. miscellane. See Miscellane.]
   1. A mixture composed of different materials; especially:
      (a) A mixture of metals resembling brass.
      (b) A mixture of different sorts of grain, as wheat and
          rye. [Written also meslin, mislin, maselyn,
          mastlin.]
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   2. A vessel made of maslin, 1
      (a) . [Obs.]
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                Mead eke in a maselyn.            --Chaucer.
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