lastdefender
nounUK /ˌlɑːst dɪˈfendə/
US /ˌlæst dɪˈfendər/
The last person who keeps something safe when everyone else is gone.
The brave knight was the lastdefender of the castle gate.
OTHER MEANINGS
2. The final player left to stop the other team from scoring.
As the lastdefender, she blocked the shot just before the whistle.
3. A person who speaks up for someone when no one else will.
He was the lastdefender of his little brother's reputation at school.
4. The final line of safety for something important, like a rule or a place.
The old lighthouse was the lastdefender against the stormy sea.