Dictionary.net

• Susceptibility of division or severance; in good part, in a friendly manner; in ill part, with displeasure; for the most part, commonly; for my part, so far as it concerns me; for my share; in part, in some degree; partly.

1874 - Etymological and pronouncing dictionary of the English language
By Stormonth, James, Phelp, P. H.

• n. Susceptibility of division, partition, or severance.

1871 - The Cabinet Dictionary of the English Language