Shaukeen is a Hindi word, mostly used for someone who is fond of something. That is, if someone loves to play music, you can say s/he is a 'shaukeen' of music.
However, at times the word is used independent of any hobby, and that often signifies that the person in question likes to indulge. This indulging can be in alcohol, of amorous nature, or otherwise.
'The Shaukeens' is an upcoming film, based on a 1981 film called 'Shaukeen' which had Ashok Kumar, Utpal Dutt and AK Hangal and Rati Agnihotri in main roles. The present film has Annu Kapoor, Anupam Kher and Piyush Mishra playing the roles along with Lisa Haydon.