I. ˌō-vər-ˈhed adverb
Date: 15th century
: above one's head : aloft
II. ˈō-vər-ˌhed adjective
Date: 1874
1.
a. : operating, lying, or coming from above
b. : having the driving part above the part driven
valves operated by an overhead camshaft
2. : of or relating to overhead
overhead costs
III. ˈō-vər-ˌhed noun
Date: 1914
1. : business expenses (as rent, insurance, or heating) not chargeable to a particular part of the work or product
2. : ceiling ; especially : the ceiling of a ship's compartment
3. : a stroke in a racket game made above head height : smash