Sentence:  Though <WSD>dango</WSD> is illegal, causing jailings of a number of prefectural governors and construction executives, the practice remains widespread. The annual total of <WSD>dango</WSD> bribes and kickbacks has at times surpassed $500 million; the sum is more or less officially recorded because construction firms have been allowed to claim a tax deduction for these "business expenses." 
Meaning of the word marked with <WSD> tags:  In Japan, bid rigging for public works contracts.