53 a woman dropped an upper millstone on his head and cracked his skull.

Read Judges 9:53 Using Other Translations

And a certain woman cast a piece of a millstone upon Abimelech's head, and all to brake his skull.
And a certain woman threw an upper millstone on Abimelech's head and crushed his skull.
a woman on the roof dropped a millstone that landed on Abimelech’s head and crushed his skull.