noun | \ ˈrīt-ˌȯf \
  1. : the elimination of an asset or amount due from the books

  1. : tax write-off

write off

transitive verb
  1. : to eliminate (an asset) from the books : enter as a loss or expense write off a bad loan

  1. : to use as a deduction in calculating taxable income write off the cost as a business expense