substitutecover
nounUK /ˈsʌbstɪtjuːtˌkʌvə/
US /ˈsʌbstɪtuːtˌkʌvər/
A substitutecover is a stand-in person who takes over someone else's job for a while.
When the regular teacher was sick, a substitutecover taught our class.
OTHER MEANINGS
2. A spare cover used in place of the original one.
She put a substitutecover on the sofa while the real one was being cleaned.
3. A temporary shield or protection used when the usual one is unavailable.
The team used a substitutecover to protect the equipment from rain.
4. A person who fills in for another during an emergency.
A substitutecover was called in when the night guard did not show up.