Answer:
What relies on columns but isn't a house, and asks for help but can't speak itself?
Plow and hoe, reap and sow, What soon does every farmer grow?
Double my number, I'm less than a score. Half of my number is less than four. Add one to my double when bakers are near. Days of the week are still greater, I fear.
There are two meanings to me. With one I may need to be broken, with the other I hold on. My favorite characteristic is my charming dimple.
There are millions of me. I am very small but when moving fast I am deadly.
I have two eyes in the front and a lot of eyes on my tail