Answer:
Iām white; perfect for cutting & grinding. For most animals I am a useful tool.
I go around and in the house but never touches the house
I am an instrument capable of making numerous sound but cannot be touched or seen.
Crooked as a rainbow and slick as a plate, ten thousand horses can't pull me straight. What am I?
I always murmur but never talk. Always run but never walk. I have a bed but never sleep, have a mouth but never speak. What am I?
The sun bakes them, The hand breaks them, The foot treads on them, And the mouth tastes them. What are they?