surtax Meaning, Definition & Usage

  1. noun an additional tax on certain kinds of income that has already been taxed
    supertax.
  2. verb levy an extra tax on
    • surtax luxury items that cost more than $1,000

WordNet

Sur"tax noun
Definitions
  1. An additional or extra tax.
Sur*tax" transitive verb
Definitions
  1. To impose an additional tax on.

Webster 1913