transitive. figurative and in extended use. To provoke or cause to happen or occur; to start, ‘spark off’; to bring about.
transitive. To act as a ‘trigger’ (sense 3) for, causing another event (esp. a chain reaction) to occur; to stimulate or ‘set off’; to activate, to…
transitive. figurative. To fire, to inspire; to kindle, to set in motion; to spark off, to be the immediate cause of (something hard to control)…