I have an example, my mother said this when we talked about religious stuff:
"I do not feel at home in a church or care much for the bible, christian God (personified) is not for me, but when i'm in nature and walk in the woods collecting berries, fishing or just sitting and watching, maybe making coffee with a pot on a fire, I feel that God is all around and in me."
I think that is spirituality, at least damn close, and what I understood, even though she used the word God, it was something more that flows through everything and everyone. Something bigger that she didn't need to explain more, it just is.
In a way we all are spiritual, we all have something spiritual inside ourselves and in our life, whatever it may be. Something that just is and doesn't need to be explained thoroughly.
But all in all, it's a very poor word for the true meaning of the thing. It lacks grandeur, bigness. First describing it and then saying "that's spirituality." is like filling a tyre and then sticking a knife into it .