were machining

• past progressive

  past progressive

  Used to describe an ongoing action or continuous state that was happening at a specific time in the past.

  of machine.
  machine

  noun

  an apparatus consisting of interrelated parts with separate functions, used in the performance of some kind of work.

Related Words

• apparatus
• appliance
• automobile
• engine
• gadget
• instrument
• motor
• tool
• vehicle