Expressions (phrases, clauses, etc.), Ichidan verb
to make a wish (to a god); to pray (for the fulfilment of a wish)
おまじないって言うのはね、女の子が好きな人と結ばれるように願をかけたりすることだよ。What you call a 'charm', you know, is what girls wish upon that they may get together with the person they love and such like.
Also written 願を掛ける【がんをかける】、願を懸ける【がんをかける】