DO NOT use Google Search as a reference for a definition. Always find a reputable source and reference that.
You will need:
Title of dictionary (Year of publication) Available from: www.webaddress.com [Accessed day month year].
Collins English dictionary (2020) Available from: http://www.collinsdictionary.com/english/creative [Accessed 20 January 2021].
In-text citation: (Collins, 2020)