sock away

verb

1. informal.
   tr to save up

Idioms and Phrases

Put money in a safe place for future use, as in I've got about $2,000 socked away for a new car . This usage presumably alludes to putting one's savings in a sock. [ Colloquial ; first half of 1900s]

Example Sentences

Nobody can sock away $25,000 for an operation or $100,000 for end-of-life care; the very idea is crazy.

From The Daily Beast