Answer:
What has one eye but cannot see?
Four of us are in your field, But our differences keep us at yield, First, a one that is no fool, Though he resembles a gardenerโs tool, Next, one difficult to split in two, And a girl once had one as big as her shoe, Then, to the mind, oneโs a lovely bonder, And truancy makes it grow fonder, Last, a stem connecting dots of three
Different lights do make me strange, thus into different sizes I will change
What is that over the head and under the hat?
You throw me out when you want to use me and you take me in when you don't want to use me. Who am I?
You use it between your head and your toes, the more it works the thinner it grows.