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1.
1. From Greek; pan = all, and theon = gods. Literally, all the gods.

2. All the gods recognized by a particular religion.

3. The three members of the Trinity.
The Father, the Son, and the Holy Ghost are a pantheon.
by Downstrike May 24, 2004
 
2.
The term for receiving a blow-job while simultaneously playing a classical guitar.

A combination of classical guitar and "head". The Pantheon is one of the only intact Classical style pagan temples, and it has a large dome.
"Hey why is your guitar in renaissance lute tuning?"

"Oh, I got Pantheon last night"
by sseo May 04, 2009