cutterhead

English

The cutterhead of a tunnel boring machine

Etymology

cutter +‎ head

Noun

cutterhead (plural cutterheads)

1. A rotating cylindrical cutting tool located at the head of a drill, boring machine, or the like.
   • 2022 December 14, Paul Stephen, “Network News: HS2's Dorothy starts to dig second tunnel bore”, in RAIL, number 972, page 22:

     The cutterhead, weighing 160 tonnes and with a ten-metre diameter, was moved by road in September.