(informal) a person who is on hand to perform a service, seize an opportunity, deal with an emergency, etc. —SHSBC Binder 16 Approved Glossary
JOHNNY-ON-THE-SPOT
ScnTUEU
(informal) a person who is on hand to perform a service, seize an opportunity, deal with an emergency, etc.(informal) like a person who is on hand to perform a service, seize an opportunity, deal with an emergency, etc.