Definition of rack rent in English:

rack rent

noun

  • An extortionate or very high rent, especially an annual rent equivalent to the full value of the property to which it relates.

    • ‘A rack rent, therefore, was a high, level rent, unlike earlier forms (mainly beneficial leases and copyholds) that had the tenant pay a large lump sum followed by a nominal rent and, perhaps, feudal services in money, labor or kind.’
    • ‘It was March 1880 and the Land War was in full swing when rebellious tenants all over Ireland refused to pay rack rents due to the fact that they had no money and were on the constant threshold of famine.’
    • ‘They were a subdued and powerless people owing their very existence to landlords and their agents who worked them to the bond with rack rents.’

verb

[with object]datedrack-rent
  • Exact an excessive or extortionate rent from (a tenant) or for (a property)

    as noun rack-renting ‘hundreds of thousands of peasants who hate corruption, rack-renting, and foreign intervention’
    as adjective rack-renting ‘rack-renting landlords’
    • ‘A small studio in the centre of the town - ideal either for monitoring the joyful events in person or indeed for rack-renting desperate pilgrims - starts at around €30,000.’
    • ‘One reason for introducing short leases was so that ‘rack-rented farms could… become subject to market forces… ’, but another was that they made tenants more accountable to landlords.’

Origin

Late 16th century (as rack-rented): from the verb rack (in the sense ‘cause stress’) + the noun rent.