The stalk of a leaf, attaching the blade to the stem.
A narrow or constricted segment of the body of an insect; especially, the metasomal segment of certain Hymenoptera, such as wasps.
The stalk at the base of the nest of the paper wasp.
A flattened petiole or leaf rachis that resembles and functions as a leaf, and may or may not be combined with an actual lamina.