One Little Word

I didn’t know one word could hold
So much within it’s sheltering fold.
I didn’t know one word could make
The world so sunny when you wake.
I little knew one word could bring
To you, so much of everything.
One little word, ah, who can tell
Just where it gets its magic spell?
It means the world to me each day;
It means my life in every way
It means just you, sweetheart to me,
One little word; what can it be?