I like to refer to Austin Cline whenever I need help with an understanding of atheist matters.
"Spirituality seems to be one of those words which has as many definitions as it does people trying to define it."
"the question that must be asked is: does it have any emotional resonance with you? Does it "feel" like it conveys some aspect of your emotional life? If so, then it may be a term you can use and it will mean just what you "feel" it conveys."
I feel that being a secular spiritual person has a meaning for me. I may or may not be able to convey that meaning to others. But it doesn't matter to me if others get it or not. I'm on my journey and I always find those liberated enough to walk beside me.