TIGHTEN ONE'S BELT

{v. phr.} To live on less money than usual; use less food and other things. * /When father lost his job we had to tighten our belts./ Often used in the expression "tighten one's belt another notch". * /When the husband lost his job, the Smiths had to do without many things, but when their savings were all spent, they had to tighten their belts another notch./