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1.
The complete opposite of a sugardaddy, one who tries, but is broke and fronting.
Man, I said I wanted a new comforter set from Macy's not the goodwill....he is such a saltdaddy!
by K=Unit January 18, 2007
 
2.
An older man who has a relationship with a younger female but doen't have anything to offer her.

The opposite of a sugar daddy!
Q:"Why can't cant your older man help pay your bills"? A:"Because he is my salt daddy"
by ctdouble June 26, 2011