empty out

"I don't believe it'll be of much use to him, any more," said he, "for it's full of polliwogs an' fish eggs, an' the water has took all the crinkle out o' the straw an ruined it. I guess, Trot, that the best thing for us to do is to empty out all his body an' carry his head an' clothes along the road till we come to a field or a house where we can get some fresh straw."