The translation of Inqulab from Urdu to English according to Oxford dictionary is A revolution or uprising Zindabad also an Urdu word meaning may a person process live Zinda as described in Wiki is a persian word used in Hindustani which includes hindi and Urdu means to live living Abad meaning in Urdu To propagate There are also evidences that Bhagat singh had raised two slogans Inquilab Zindabad Long live revolution and Samrajyavad Ka Nash Ho Down with imperialism Which is given in the article whose link i m attaching The article can be used to further build the biographic page of Bhagat Singh on Wiki Amarkande