Maintenance may refer to: Biological science Maintenance respiration Maintenance of an organism Non-technical maintenance:, slang expression Child support or alimony, also called spousal support Champerty, assistance provided to a litigant by one who doesn't have a bona-fide interest in a lawsuit Technical maintenance: Aircraft maintenance Car maintenance Railroad track maintenance Software maintenance Software maintainer General types of technical maintenance: Maintenance, repair and opera… (More on Maintenance)