Definition of pedicel:
(n) :
a stalk of individual flower; a stalk bearing a single flower or spore-producing body within a cluster; a stalk-shaped body part; an anatomical part that resembles a stem or stalk
"1996: Spiders have the body clearly divided into two pieces which are joined by a narrow stalk, the pedicel. -- Michael J. Roberts, Spiders of Britain and Northern Europe (Collins 1996, p. 10)"