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1.
something that is both rocking and spectacular. Used to express great excitement or suprise.
Wow that concert was rocktacular.
by 12Rat34 March 15, 2006
 
2.
a combination of rock and spectacular
1. When something fuckin' rocks
2. an expression of excitement or anticipation of something great
1. Awww man! This new CD I got is rocktacular
2. dude this is gonna be rocktacular
by mikol_g June 22, 2006