save, lay aside, save up -- (accumulate money for future use; "He saves half his salary")
save, make unnecessary -- (make unnecessary an expenditure or effort; "This will save money"; "I'll save you the trouble"; "This will save you a lot of time")
save, economize, economise -- (spend sparingly, avoid the waste of; "This move will save money"; "The less fortunate will have to economize now")
keep open, hold open, keep, save -- (retain rights to; "keep my job for me while I give birth"; "keep my seat, please"; "keep open the possibility of a merger")
write, save -- (record data on a computer; "boot-up instructions are written on the hard disk")