lowermost
adjectiveUK /ˈləʊəməʊst/
US /ˈloʊərˌmoʊst/
The lowest one of all, at the very bottom.
The lowermost shelf holds the heaviest books.
OTHER MEANINGS
2. Furthest down in a stack or pile.
Take the lowermost box from the pile.
3. Lowest in rank or position.
He started at the lowermost level of the company.
4. Situated nearest the ground.
The lowermost branches of the tree touch the fence.