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petiole (plural petioles)
- (botany) The stalk of a leaf, attaching the blade to the stem.
- (entomology) A narrow or constricted segment of the body of an insect. Used especially to refer to the metasomal segment of Hymenoptera such as wasps.
- (entomology) The stalk at the base of the nest of the paper wasp.
- (segment of the body of an insect): pedicel