wiper

(pər)

noun

  1. a person or thing that wipes
  2. something used for wiping, as a towel or rag
  3. a moving electrical contact, as in a rheostat
  4. a projecting piece on a rotating or rocking part, which raises and lowers or trips another, usually reciprocating, part; cam; eccentric
  5. a squeegee blade attached to an arm that can be moved automatically back and forth across a windshield

See wiper in American Heritage Dictionary 4

noun
  1. One that wipes.
  2. Something, such as a towel, used for wiping.
  3. A device designed for wiping, as on an automobile windshield.
  4. A projecting cam, as on a rotating shaft, that activates another machine part.
  5. A movable electrical contact, as in a rheostat.

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