What is the meaning of Amuser?

Someone who amuses.

One who diverts attention, usually to distract or bewilder, often for fraudulent purposes; hence a cheat, deceiver or thief.

One of a class of rogues who carry snuff or dust in their pockets, which they throw into the eyes of people so as to enable their accomplices to rob them while pretending to help them.

to amuse, to entertain

to have fun, to enjoy oneself

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Source: wiktionary.org