n. Someone (especially a man) who is considered to be a good choice for marriage, because of wealth, status etc.
The Century Dictionary and Cyclopedia
n. A person considered with reference to his means or position as related to marriage: as, a good parti (French un bon parti), a good match in regard to pecuniary and social status.
Word Usage
"River, the coöperative spirit of doing the housework together, the satirical commencements in parti-colored caps and gowns, lent themselves toward a reproduction of the comradeship which college life fosters."