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1 : to engage in or perform a dance
2 : to move or seem to move up and down or about in a quick or lively manner
transitive senses
1 : to perform or take part in as a dancer
2 : to cause to dance
3 : to bring into a specified condition by dancing
"Hey babe. Get your groove on. Let's go spank the planks."
by KWB March 14, 2005
1) to masterbate
2) musical slang - to over indulgue in a guitar solo

(both samething really)
Pete took centre stage and spanked the plank for fifteen minutes before somebody turned his amp off.
by black flag May 30, 2004
The act of playing a musical instrument called the guitar.
hey dudes, I will catch u later I am going to go spank the plank.
by Stevie Mtz November 18, 2007