Definition: The term "whiffletrees" is a play on words that refers to the smell of something, in this case, it's a type of flower. It could be used metaphorically for a scent or aroma, as if someone were whispering a particular fragrance into your ear. Whiffletrees are often used to describe the scent of a specific plant or tree and can be associated with a variety of associations such as happiness, romance, or even love.