裹足不前 is a four-character idiom (成语) meaning 'to hesitate to move forward' or 'to stop in one's tracks due to fear or reluctance'. The literal image is of someone wrapping their feet in cloth and refusing to take a step. You can use it to describe a person, a group, or even an organization that stalls or retreats from action when faced with difficulty or risk. It is more formal and literary than everyday words like 犹豫.