Okay, I know what that means without looking at the dictionary, As you said you won't find the meaning of this word.
Heckle, is a verb (DUH, Ofcourse!!) meaning Interrupt someone while he/she speaks, It's has the same meaning of the word Taunt, which leads to the Arabic meaning وهو مقاطعة الشخص اثناء كلامة بصرخة أو كلام محايد له وخاصة أثناء تجمع الناس.
2pac, I'm not sure about that, so don't blame me if I got the wrong answer! hehe
Ok, What's the meaning of Buckle?!