over·haul 
/ˌoʊvɚˈhɑ:l/ verb
over·hauls; over·hauled; over·haul·ing /ˌoʊvɚˈhɑ:l/ verb [+ obj] 1 : to look at every part of (something) and repair or replace the parts that do not work
▪ The mechanic overhauled the car's engine. 2 : to change (something) completely in order to improve it
▪ They had to overhaul their original plans. ▪ Lawmakers are overhauling the welfare program.
▪ The mechanic overhauled the car's engine.
▪ They had to overhaul their original plans. ▪ Lawmakers are overhauling the welfare program.
— over·haul /ˈoʊvɚˌhɑ:/ noun, plural over·hauls [count]
▪ The engine underwent a complete overhaul. ▪ Lawmakers are attempting a major overhaul of the welfare program.
/ˈoʊvɚˌhɑ:/ noun, plural over·hauls [count] ▪ The engine underwent a complete overhaul. ▪ Lawmakers are attempting a major overhaul of the welfare program.
