Moon is called ‘Chann’ in Punjabi. ‘Channa’ is just a variation of that word. Channa Mereya or Mere Channa is used to lovingly refer to one’s lover. In Ae Dil Hai Mushkil, Channa Mereya has been used for a female (Anushka Sharma) but it can be used for a male as well. The meaning of Channa Mereya purported by Karan Johar and the team of Ae Dil Hai Muskil on various public platforms is ‘The light of my soul’. It is correct in the sense that ones’ beloved is the light of one’s soul. Another song featuring Channa is this.
Listen to the beautiful song below where the singer/actor (Gippy Grewal) is referring to his lover (Neeru Bajwa) as a Channa (Moon) which is lost in clouds. (i.e: Lamenting not being able to see his lover).
BAMB JATT | AMRIT MANN
MAANA KE HUM YAAR NAHIN | MERI PYARI BINDU
MOVE YOUR LAKK
MANN BHAREYA | B PRAAK