What is the definition of tax?

noun noun: tax; plural noun: taxes

1. 1. a compulsory contribution to state revenue, levied by the government on workers' income and business profits or added to the cost of some goods, services, and transactions.

   synonyms: duty, tariff, excise, customs, dues; More levy, toll, impost, tithe, charge, fee

   "they have to pay tax on the interest"

   antonyms: rebate

2. 2. a strain or heavy demand.

   "a heavy tax on the reader's attention"

   synonyms: burden, load, weight, demand, strain, pressure, stress, drain, imposition "a heavy tax on one's attention"

verb

verb: tax; 3rd person present: taxes; past tense: taxed; past participle: taxed; gerund or present participle: taxing

1. 1. impose a tax on (someone or something).

   "hardware and software is taxed at 7.5 percent"

   synonyms: charge (duty on), tithe; formalmulct "they tax foreign companies more harshly"