tinker
noun
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small mackerel found nearly worldwidechub mackerel
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formerly a person (traditionally a Gypsy) who traveled from place to place mending pots and kettles and other metal utensils as a way to earn a living
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a person who enjoys fixing and experimenting with machines and their partstinkerer
verb
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try to fix or mend“Can you tinker with the T.V. set--it's not working right”fiddle
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do random, unplanned work or activities or spend time idlymonkey
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work as a tinker or tinkerer