### Clue: Climber stuck on top of Everest might have this (4)
### Answer: HOPE 
 ### Explanation: Definition: this
 HOP(a climbing plant whose flowers are used in brewing beer) **placed above**(stuck on, in a down clue) **1st letter of**(top of) "Everest".
Defn: A mountaineer having climbed and got stranded/stuck on the top of Mt. Everest might have this of being rescued.