Cut off my tail and a wild pig you'll find, Lose my last two and a sly snake winds, Take out my second and Shakespeare takes the stage, All put together, I'm useful on many a page.

I exist as as a narrow glass tube marked with graduations., but I am not used to measure height, length nor distance.. You might find me in a house on the wall,a window, or a desk..

I look like a closet, but I am not a storage or living space. People often freshen up in here.

My first two is the self, simple and true. My last four sharpens, refining anew. Between rests a hollow, an empty divide, Yet whole, I can carry one voice far and wide.

I spark with just a single swipe, I wait in piles when forests are dry, Some seek love, some seek a flame, Different faces, but one same name