FUSIFORM

adj. shaped like a spindle

Fusiform means having a spindle-like shape that is wide in the middle and tapers at both ends.Aneurysms can be classified as saccular or fusiformIn botany, a fusiform cell or other plant structure is spindle-like and tapers at both ends Many species of water-dwelling animal have a fusiform bodyThe fusiform gyrus is part of the temporal lobe of the brainThe fusiform face area (FFA) is a part of the human visual system which seems to specialize in facial recognition
See more at Wikipedia.org...

Adjective
1. tapering at each end
(synonym) spindle-shaped, cigar-shaped
(similar) pointed

(a.)
Shaped like a spindle; tapering at each end; as, a fusiform root; a fusiform cell.
  

fusiform
spindle-shaped