schoolmistress

from WordNet (r) 3.0 (2006)
schoolmistress
    n 1: a woman schoolteacher (especially one regarded as strict)
         [syn: {schoolmarm}, {schoolma'am}, {schoolmistress},
         {mistress}]
    
from The Collaborative International Dictionary of English v.0.48
Schoolmistress \School"mis`tress\, n.
   A woman who governs and teaches a school; a female
   school-teacher.
   [1913 Webster]
    

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