Definition of pizza base:
(n) :
(slang, derogatory) A person whose face has blemishes, acne, welts, bruises, colored splotches, etc.
(n) :
(slang, derogatory) The face of such a person.
(n) :
Alternative letter-case form of pizza face. [(slang, derogatory) A person whose face has blemishes, acne, welts, bruises, colored splotches, etc.]