Answer:
A hole in a pole. Though I fill a hole in white I'm used more by the day and less by the night
You use me from your head to your toes. The more I work, the thinner I grow. What am I?
Sing me to a baby about to go to sleep.
I take off my clothes when you put on your clothes. I put on my clothes when you take off your clothes. What am I?
My first half means container. Not a lot of people understand my language.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.