nurser

from WordNet (r) 3.0 (2006)
nurser
    n 1: a person who treats something carefully; "a great nurser of
         pennies"
    
from The Collaborative International Dictionary of English v.0.48
Nurser \Nurs"er\, n.
   One who nurses; a nurse; one who cherishes or encourages
   growth.
   [1913 Webster]
    

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