wiper

nouns

a worker who wipes
wiper
is derived from
wipe
is a type of (narrower)
a person who works at a specific occupation
"he is a good worker"
worker
contact consisting of a conducting arm that rotates over a series of fixed contacts and comes to rest on an outlet
contact arm, wiper, wiper arm
is derived from
wipe
a mechanical device that cleans the windshield
windscreen wiper, windshield wiper, wiper, wiper blade
is derived from
wipe