The word "puss" can have a few different meanings depending on the context:
As a noun, "puss" is a colloquial term for a cat, often used in British English.
As a noun, "puss" can also refer to a person's face, usually in a derogatory way. For example, "wipe that silly grin off your puss."
As a noun, "puss" can also refer to a thick, yellowish fluid that forms at the site of an infection, such as a pimple or abscess. This usage is more commonly spelled as "pus."
As a verb, "to puss" means to become infected and produce pus, as in "the wound began to puss after a few days."
It's important to note that the term "puss" is considered slang and may not be appropriate in formal or professional settings.