Capable of being garnished, or subject to garnishment (legal seizure of money or property).
From garnish plus -able meaning capable of being. Garnish originally meant to decorate (from Old French 'garnir'), but in legal contexts it means to seize or hold property on behalf of a creditor.
When someone owes you money and won't pay, courts can garnish their wages—it's basically the government reaching into their paycheck before they get it. This legal power is surprisingly modern, becoming common in the 20th century.
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