Answer:
There is a word in the English language in which the first two letters signify a male, the first three letters signify a female, the first four signify a great man, and the whole word, a great woman. What is the word?
My first master has four legs, my second master has two. My first I serve in life, my second I serve in death. Tough I am, yet soft beside. Against ladies cheeks I often reside.
I am the red tongue of the earth, that buries cities.
What has three ways out and just one way in?
The higher I climb, the hotter I engage. I cannot escape from my crystal cage.
You use it between your head and your toes, the more it works the thinner it grows.