A "charade" riddle by Jane Austen:
You may lie on my first on the side of a stream,
And my second compose to the nymph you adore,
But if, when you've none of my whole, her esteem
And affection diminish -- think of her no more!
"My first" = first syllable; "my second" = second syllable; "my whole" = the whole word. The answer to the riddle is here.