Top definition
the six string fretless bass owned by primus frontman les claypool.it is made from different woods (walnut, curly maple, padauk, purple heart, ebony and cocobolo) these are in a striped pattern which is why it is called the rainbow bass.it was made by carl thompson basses and cost $10,000.
if i had 10 grand i would buy a bass equal in awsomness to the rainbow bass
by primussucks June 09, 2005
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