slusher

noun
slush·​er | \ -shə(r)\
plural -s

Definition of slusher

1 : one that slushes: such as
a : a worker who sprays filler over castings (such as sinks or bathtubs) to make a smooth surface for the enamel coating
b : a device for slushing

History and Etymology for slusher

slush entry 2 + -er

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