Best definition
whootis
1. n. The universal contextual noun. Used mostly when the actual name of the object is unknown. Derived from working

on Chrysler products, not knowing what the F%$K certian parts were or what purpose they served.
(See also Sprutis, Whootilated Sprutis, and Sprutilated Whootis.)

n. WTF is this whootis attached to the synchronizer ?