Petiole may refer to: Petiole (botany), the stalk of a leaf, attaching the blade to the stem; petiolate leaves are ones where the tendril connects to the leaf before its apex Petiole (insect) (also called a pedicel), the constricted first (and sometimes second) metasomal segment Petiole (nest) is the supporting stalk of an insect nest such as a paper wasp nest… (More on Petiole)