surtax /sûrˈtaks/

1. An additional tax
2. Tax payable on incomes above a certain high level (term not in official use in this sense)

1. To tax additionally
2. To charge surtax

• millruns
• mills
• Mills-and-Boon
• Mills bomb
• millscale
• millscales
• mill-sixpence
• mill-sixpences
• millstone
• millstone grit
• millstones
• millstream
• millstreams
• milltail
• milltails
• mill-teeth
• mill-tooth
• millwheel
• millwheels
• millwork
• millworker
• millworkers
• millworks
• millwright
• millwrights