Answer:
I have three feet but no arms or legs
I am a seed with three letters in my name. Take away the last two and I still sound the same.
My first is a heir; My second's a snare; my whole is the offspring of fancy; which I sent out of play upon Valentine's day As a token of love to my Nancy.
Drop me and the world will shatter. You can always find me where you empty your bladder. What am I?
I am the ultimate killing machine used not once but TWICE I can be made by humans.
I am always hungry, I must always be fed. The finger I lick will soon turn red. What am I?