aftershaft
/ˈɑːftəʃɑːft/ /ˈaftəʃaft/Ornithology
noun
= afterfeather. In later use also: the shaft of such a structure.
Origin
Mid 19th century; earliest use found in William Sweetland Dallas (1824–1890). From after- + shaft, after German Afterschaft; compare scientific Latin hyporachis.