† key loadern.Obsoleterare a person employed to balance the wooden keys of a musical instrument by the insertion of lead pellets.
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society > leisure > the arts > music > musical instrument > making or fitting instruments > [noun] > instrument makers or fitters > keyboard maker or fitter
stringer1842
bellyman1845
key loader1886
1886 Reynolds's Newspaper 9 May 8/1 He had worked..as a key loader.