contact arm

/ˌkɑntækt ɑrm/
IPA guide

Definitions of contact arm
  1. noun
    contact consisting of a conducting arm that rotates over a series of fixed contacts and comes to rest on an outlet
    synonyms: wiper, wiper arm
    see moresee less
    type of:
    contact, tangency
    (electronics) a junction where things (as two electrical conductors) touch or are in physical contact
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