plunger: hand tool consisting of a stick with a rubber suction cup at one end; used to clean clogged drains
tool: an implement used in the practice of a vocation
myelomeningocele: a congenital defect of the central nervous system in which a sac containing part of the spinal cord and its meninges protrude through a gap in the vertebral column; frequently accompanied by hydrocephalus and mental retardation