stainer

from WordNet (r) 3.0 (2006)

stainer
    n 1: a worker who stains (wood or fabric)

from The Collaborative International Dictionary of English v.0.48

Stainer \Stain"er\ (-[~e]r), n.
   1. One who stains or tarnishes.
      [1913 Webster]

   2. A workman who stains; as, a stainer of wood.
      [1913 Webster]