Spirituality that cannot be applied in actual life is no spirituality. God is in the world and is acting through every one of us. God-realisation does not mean disappearing into some unknown realm beyond the world. True spirituality consists in our living in this world, moving in it and serving all beings, all the time being conscious of the Divine within us and everywhere around us.
That which relates to the spirit and the experience of the Spirit is spirituality. Because Spirit and matter are two different things. Our body is material and the spirit dwelling in this body is spiritual. So, whatever relates to this Spirit within us is spiritual.