Other forms: excavators
An excavator is a machine with a jointed arm and bucket for digging. A tracked excavator, hire an excavator, the excavator arrived.
The house is what everybody calls the rotating top, and the whole thing turns on a ring that lets it swing without moving the tracks. Britain also says digger, which is what everybody actually says.
1nounexcavatorA machine with a jointed arm and bucket for digging.
“An excavator dug a deep trench for the new water pipes.”
excavator is a machine.
From excavate + -or.
Etymology from Wiktionary, CC BY-SA