Main Entry: ¹stand·by

Pronunciation: \ˈstan(d)-ˌbī\

Function: noun

Inflected Form(s): plural stand·bys \-ˌbīz\

Date: 1796

1 a : one to be relied on especially in emergencies b : a favorite or reliable choice or resource
2 : one that is held in reserve ready for use : substitute

— on standby : ready or available for immediate action or use