tie (one) over
A common misspelling of the phrase "tide one over," meaning to maintain, sustain, or support one through a lean or difficult time until more of something is acquired, typically food or money. Could you loan me $20? I just need it to tie me over until I get paid on Friday. A: "Here, have a banana, it should tie you over until lunch." B: "I think you mean 'tide you over until lunch,' right?" A: "Oops, I always make that mistake."
To support someone through a period of difficulty or scarcity: Dinner is not for three hours, but this apple should tie me over.