The word etymology is derived from the Greek word ἐτυμολογία, etymologia, itself from ἔτυμον, etymon, meaning "true sense" and the suffix -logia, denoting "the study of".[1][2]
I think could be real close. How about just a little vocal adulteration of a "plain end pipe" ( pep ), basically all plain end(s) without enough length to be called a real pipe?