The word gajan in Bengali comes from the word garjan or roar that sannyasis (hermits} emit during the festivities.Alternatively, the word gajan is considered a combination of parts of two words - ga is from the word gram meaning village and jan is from the word janasadharan meaning folk. In this sense gajan is a festival of village folk.
In Shiva’s gajan Shiva is married to Harakali on this day. The sannyasis form the barjatri (bridegroom’s party). In Dharma’s gajan Dharmathakur is married to Mukti. The most recent studies on the gajan festival are: 1) Nicholas, R. Rites of Spring. Gājan in Village Bengal. New Delhi: Chronicle Books, 2008; and 2) Ferrari, F.M. Guilty Males and Proud Females. Negotiating Genders in a Bengali Festival. Calcutta and London: Seagull, 2010.