eat one's word 是什么意思?

应该是收回前言,认错的意思吧这个例子应该可以说明的:When we got married my young brother predicted it would never last,that we weren't right for each other。But he's certainly had to eat his words。我们结婚的时候,我的弟弟说我们的婚姻长不了。但是他肯定是得承认他错了。