An ancient cliché.
"“No, my young friend,” says Chadband, smoothly, “I will not let you alone. And why? Because I am a harvest-labourer, because I am a toiler and a moiler, because you are delivered over unto me, and are become as a precious instrument in my hands."


Moil \Moil\, v. t. [imp. & p. p. Moiled; p. pr. & vb. n.
Moiling.] [OE. moillen to wet, OF. moillier, muillier, F.
mouller, fr. (assumed) LL. molliare, fr. L. mollis soft. See
Mollify.]
To daub; to make dirty; to soil; to defile.

Thou . . . doest thy mind in dirty pleasures moil.
--Spenser.

Ah, yes, we'd more likely read today of something having been defiled rather than moiled. Wonder why it has dropped so much out of use?

The old order changeth, ever giving way to the new.

But moiled is such a direct word--easy to understand and pronounce. I do wonder why this one dropped out of use, at least among the people I know. I don't know that I've ever knowingly read it, but will look out for it from now on.

It gets over a thousand hits on Google, but I suppose many of those will have to do with Irish moiled cattled based on a quick read of hits.

Here's a link that has a photograph and information about the Irish breed also known as Irish polled cattle:

http://www.ansi.okstate.edu/breeds/cattle/irishmoiled/