Conversation so far:
What language did they speak?
a non-Indo-European language; the majority consensus is that Etruscan is related only to other members of what is called the Tyrsenian language family.
Are there any other interesting aspects about this article?
No etymology exists for Rasna, the Etruscans' name for themselves, although Italian historic linguist Massimo Pittau has proposed the meaning of 'Shaved' or 'Beardless'.
What is etymology?
CANNOTANSWER.

Question: Why did Pittau think it meant beardless?
Self-contained rewrite: Why did Pittau think the word meant beardless?