A: It literally means "We fought." In the context of the song, it implies a lover's quarrel that resulted in a breakup.
For example, a line like “Chunari lar gaiyan” (The scarf fought) might be subtitled as “The veil resisted.” The scarf, a symbol of modesty, fighting back implies a rebellion against conservative norms. Thus, the subtitle uncovers the song’s true essence: a celebration of the naari (woman) who fights for her space, her love, and her honor. The “l gya” (what is understood) is that beneath the glamorous beats lies a grassroots feminist anthem. Lar Gaiyan - Lyrics and subtitle l gya