Answer:
You throw me out when you use me and take me in when you are done.
What has to be broken before you can use it?
I flow from the Homerโs mouth when he sees doughnuts.
I am seen in the water. If seen in the sky I am in the rainbow a jay's feather and lapis lazuli.
I'm white and used for cutting and grinding. When I'm damaged, humans usually remove or fill me. For most animals I am a useful tool. What am I?
If itโs information you seek, come and see me. If itโs pairs of letters you need, I have consecutively three. What am I?