To accumulate money, especially for a specific, planned expenditure.(verb)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "save up" in a sentence
"All over Lesbos, where everyone is horse-mad, men save up all year for this event, and drink, they say, for three days and nights."
"Most of the trannies are small-framed, young gay men from Brazil who save up their money, come to Italy, get the operation, and make a good living selling their bodies to Italian men."