What is a pig ma?

"Pig ma" isn't a recognized term or phrase. It's likely a misspelling or a word that doesn't exist.

Could you please clarify what you mean? Perhaps you're looking for one of the following:

* Pigmentation: This refers to the color of skin, hair, or eyes.

* Pigma: This could be a misspelling of "pigma," which is a type of ancient Greek writing implement made from a mixture of soot and gum.

* Pigmaeon: This is a fictional character from Greek mythology, a skilled sculptor who fell in love with his own statue.

If you can provide more context or information about what you're looking for, I might be able to help you further.