1. located at the very bottom; lowest in position

Examples

• The bottommost shelf held the heaviest books.
• She found her keys in the bottommost drawer of the desk.
• The bottommost layer of rock was formed millions of years ago.
• Place the fragile items on the bottommost rack of the dishwasher.
• The bottommost step was cracked and needed repair.
• He signed his name on the bottommost line of the contract.