Groundbreaking invention

This time we are looking on the crossword clue for: Groundbreaking invention.
it’s A 24 letters crossword puzzle definition. See the possibilities below.

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Possible Answers: PICKAXE.

Last seen on: –Wall Street Journal Crossword – December 22 2021 – Extra Fees
Wall Street Journal Crossword – December 22 2021 – Extra Fees
LA Times Crossword 7 Oct 21, Thursday
LA Times Crossword 8 Oct 20, Thursday