1 definition by JohnBoy28

Experienced in a particular field or activity. Knows the ropes already and doesn't need training or instructions.
In a restaurant kitchen;

Cook: How's the new dishwasher? Does he require babysitting?

Manager: No, he's seasoned. He worked two years at that barbecue place down the street.
by JohnBoy28 February 22, 2009
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