overhead

Adjective

• located or originating from above
  • an overhead crossing
    

Adverb

• above the head; over the head
  • bring the legs together overhead
    

• above your head; in the sky
  • planes were flying overhead
    

Noun

• a hard return hitting the tennis ball above your head

• (nautical) the top surface of an enclosed space on a ship

• a transparency for use with an overhead projector

• (computer science) the disk space required for information that is not data but is used for location and timing

• (computer science) the processing time required by a device prior to the execution of a command

• the expense of maintaining property (e.g., paying property taxes and utilities and insurance); it does not include depreciation or the cost of financing or income taxes

Related words

• Synonyms: 
  smash , viewgraph , disk overhead , command processing overhead time , command processing overhead , command overhead , operating expense , operating cost , budget items
• Antonyms: 
  surface , subsurface