Often appears in the figurative sense — making do, scraping by. Compare with
望梅止渴 (wàngméizhǐkě, 'gaze at plums to quench thirst' — imagined relief) and
画饼充饥 (huàbǐngchōngjī, 'draw cakes to satisfy hunger' — wishful thinking).
充饥止渴 is the unironic version.