What part of a noun is shed?

"Shed" is not a part of a noun. It's a verb meaning to discard something, to let go of something, or to lose something.

For example:

* She shed a tear. (Meaning: She cried.)

* The snake shed its skin. (Meaning: The snake lost its old skin.)

* He shed his winter coat. (Meaning: He took off his heavy winter jacket.)

Let me know if you have any other questions!