standbyorder
nounUK /ˈstændbaɪˌɔːdə/
US /ˈstændbaɪˌɔːrdər/
A standby order is a rule that tells someone to be ready to help if they are needed.
The pilot was on a standby order in case another pilot got sick.
OTHER MEANINGS
2. An instruction to keep something ready for use if it is needed.
The crew kept the spare boat under a standby order.
3. A command for troops or workers to stay ready to act at any moment.
The soldiers received a standby order before the storm.
4. A request to hold a place or item until it is called for.
The shop put the last ticket on a standby order for me.