From The Collaborative International Dictionary of English v.0.48 :
Polisher \Pol"ish*er\, n.
One who, or that which, polishes; also, that which is used in
polishing. --Addison.
[1913 Webster]
From WordNet (r) 3.0 (2006) :
polisher
n 1: a power tool used to buff surfaces [syn: buffer,
polisher]